656420304 has 20 divisors (see below), whose sum is σ = 1695752576. Its totient is φ = 218806752.

The previous prime is 656420273. The next prime is 656420309. The reversal of 656420304 is 403024656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656420309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6837664 + ... + 6837759.

Almost surely, 2^656420304 is an apocalyptic number.

It is an amenable number.

656420304 is an abundant number, since it is smaller than the sum of its proper divisors (1039332272).

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

656420304 is a wasteful number, since it uses less digits than its factorization.

656420304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13675434 (or 13675428 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 656420304 is about 25620.7006929943. The cubic root of 656420304 is about 869.0818269411.

The spelling of 656420304 in words is "six hundred fifty-six million, four hundred twenty thousand, three hundred four".