656435968 has 18 divisors (see below), whose sum is σ = 1310308244. Its totient is φ = 328217856.

The previous prime is 656435903. The next prime is 656435993. The reversal of 656435968 is 869534656.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281846 + ... + 1282357.

Almost surely, 2^656435968 is an apocalyptic number.

It is an amenable number.

656435968 is a deficient number, since it is larger than the sum of its proper divisors (653872276).

656435968 is an equidigital number, since it uses as much as digits as its factorization.

656435968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564219 (or 2564205 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 52.

The square root of 656435968 is about 25621.0063814831. The cubic root of 656435968 is about 869.0887397830.

The spelling of 656435968 in words is "six hundred fifty-six million, four hundred thirty-five thousand, nine hundred sixty-eight".