70720892356 has 9 divisors (see below), whose sum is σ = 123762492399. Its totient is φ = 35360180244.

The previous prime is 70720892329. The next prime is 70720892357. The reversal of 70720892356 is 65329802707.

The square root of 70720892356 is 265934.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70720892357) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 465385 + ... + 598351.

Almost surely, 2^70720892356 is an apocalyptic number.

70720892356 is the 265934-th square number.

It is an amenable number.

70720892356 is a deficient number, since it is larger than the sum of its proper divisors (53041600043).

70720892356 is an frugal number, since it uses more digits than its factorization.

70720892356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265938 (or 132969 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

Multiplying 70720892356 by its sum of digits (49), we get a square (3465323725444 = 1861538²).

The spelling of 70720892356 in words is "seventy billion, seven hundred twenty million, eight hundred ninety-two thousand, three hundred fifty-six".