656934072 has 16 divisors (see below), whose sum is σ = 1642335240. Its totient is φ = 218978016.

The previous prime is 656934067. The next prime is 656934121. The reversal of 656934072 is 270439656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13686103 + ... + 13686150.

Almost surely, 2^656934072 is an apocalyptic number.

It is an amenable number.

656934072 is an abundant number, since it is smaller than the sum of its proper divisors (985401168).

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

656934072 is a wasteful number, since it uses less digits than its factorization.

656934072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27372262 (or 27372258 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 656934072 is about 25630.7251555628. The cubic root of 656934072 is about 869.3085058891.

The spelling of 656934072 in words is "six hundred fifty-six million, nine hundred thirty-four thousand, seventy-two".