It's about one-ten-thousandth as tall as Aconcagua.
In other words, 64 centimeters is 0.0000919290 times the height of Aconcagua, and the height of Aconcagua is 10,878 times that amount.(a.k.a. Cerro Aconcagua) (Mendoza, Argentina)
Aconcagua measures 696,190 centimeters height at its peak. Although there is no definitive evidence that members of the indigenous Inca civilization ever reached the peak the mountain, numerous archeological sites have been found on the slopes of the mountain, including a naturally-embalmed Incan mummy was discovered on a 520,000 centimeters high ridge.
It's about one-fifteen-thousandth as tall as Mount Everest.
In other words, the height of Mount Everest is 13,800 times 64 centimeters.(a.k.a. Mount Chomolungma, a.k.a. सगरमाथा, a.k.a. Chajamlungma, a.k.a. ཇོ་མོ་གླང་མ, a.k.a. 珠穆朗玛峰, a.k.a. Zhūmùlǎngmǎ Fēng) (Sagarmatha Zone, Nepal and Tibet, China) (to summit, excluding snow depth)
Mount Everest is 885,000 centimeters above sea level at its summit. The plate tectonics of the Indian subcontinent continuously alter the mountain's peak — raising it by 0.40 centimeters and shifting it to the northeast by 0.450 centimeters each year.
It's about one-fifteen-thousandth as tall as a Mauna Loa.
In other words, 64 centimeters is 0.000069810 times the height of a Mauna Loa, and the height of a Mauna Loa is 14,320 times that amount.(Hawaii) (Hawaiian island volcano) (total height from seafloor)
Mauna Loa, one of the five volcanoes which forms the island of Hawaii and the tallest mountain in total height in the world, rises to 920,000 centimeters above the seafloor. The peak of Loa is home to the approximately 6,000 sq. m (0.6 ha) Lake Waiau, one of the highest altitude lakes in the United States outside of Colorado.
It's about one-fifteen-thousandth as tall as The Challenger Deep (Marianas Trench).
In other words, 64 centimeters is 0.0000587050 times the height of The Challenger Deep (Marianas Trench), and the height of The Challenger Deep (Marianas Trench) is 17,034 times that amount.(near Marianas Islands, a.k.a. Ladrones Islands, northwestern Pacific Ocean) (depth below sea level)
The Challenger Deep, at the southern end of the Marianas Trench, reaches a depth of 1,090,200 centimeters below sea level. There has been only one manned expedition to the bottom of Challenger Deep — a 1960 voyage that took 4 hours and 48 minutes to reach the bottom.
It's about one-fifteen-thousandth as tall as Maxwell Montes.
In other words, the height of Maxwell Montes is 17,000 times 64 centimeters.(Ishtar Terra, Venus)
Maxwell Montes rises to a total height of 1,100,000 centimeters. Since Venus does not seem to have the kind of tectonic activity which gives rise to mountains on Earth, the origin of the Venusian mountain remains the subject of some dispute.
It's about one-forty-thousandth as tall as Olympus Mons.
In other words, the height of Olympus Mons is 42,000 times 64 centimeters.(a.k.a. Mount Olympus) (Mars)
The tallest mountain in the solar system, Olympus Mons rises to approximately 2,700,000 centimeters. The mountain has been known to astronomers since the nineteenth century because it is tall enough to rise above Mars' frequent dust storms.
It's about 85,000 times as long as a Red Blood Cell.
In other words, the length of a Red Blood Cell is 0.0000120 times 64 centimeters.(a.k.a. RBCs, a.k.a. haematids, a.k.a. erythrocyte, a.k.a. erythroid cells, a.k.a. red blood corpuscles) An average Red Blood Cell measures 7.5 µm (micrometers) in diameter. An average human has 20 - 30 trillion red blood cells in their body and each cell completes a circulatory lap in about 20 seconds.