70900720 has 160 divisors (see below), whose sum is σ = 195416064. Its totient is φ = 23654400.

The previous prime is 70900717. The next prime is 70900733. The reversal of 70900720 is 2700907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 627384 + ... + 627496.

Almost surely, 2^70900720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70900720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97708032).

70900720 is an abundant number, since it is smaller than the sum of its proper divisors (124515344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70900720 is a wasteful number, since it uses less digits than its factorization.

70900720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 70900720 is about 8420.2565281587. The cubic root of 70900720 is about 413.8886800360. Note that the first 3 decimals are identical.

The spelling of 70900720 in words is "seventy million, nine hundred thousand, seven hundred twenty".