70 (number)

70 (number)

70 (seventy) is a natural number following sixty-nine and preceding seventy-one.

Mathematics

It is a composite number with the divisors being 2, 5, 7, 10, 14 and 35. It is a Pell number. Its factorization makes it a sphenic number. It is a pentagonal number and a 13-agonal number.

Seventy is:

the atomic number of ytterbium, a lanthanide.
the designation of USA Interstate 70, a freeway that goes from Utah to Maryland.
In miles per hour, a common speed limit for freeways in many American states.
The registry of the U.S. Navy's nuclear aircraft carrier USS Carl Vinson (CVN-70), named after U.S. Representative Carl Vinson.
The number of elders assembled by Moses on God's command in the desert (Holy Bible, Numbers 11:16-30).
The year AD 70.

69 and 71