656296972 has 24 divisors (see below), whose sum is σ = 1180699520. Its totient is φ = 318971520.

The previous prime is 656296961. The next prime is 656297017. The reversal of 656296972 is 279692656.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259072 + ... + 261592.

Almost surely, 2^656296972 is an apocalyptic number.

It is an amenable number.

656296972 is a deficient number, since it is larger than the sum of its proper divisors (524402548).

656296972 is a wasteful number, since it uses less digits than its factorization.

656296972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4321 (or 4319 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 52.

The square root of 656296972 is about 25618.2936980588. The cubic root of 656296972 is about 869.0273941776.

The spelling of 656296972 in words is "six hundred fifty-six million, two hundred ninety-six thousand, nine hundred seventy-two".