70 is a positive integer between 69 and 71.
70 is an even composite number.
69! < googol < 70!. Many scientific calculators overflow at googol, so 70! is the least factorial number that cannot be stored on such calculators.
In googology Edit
In Greek-based number-naming systems, 70 is associated with prefix "heptaconta-", and with prefix "septuaginti-" in Latin systems.