656485064 has 16 divisors (see below), whose sum is σ = 1273355100. Its totient is φ = 316923712.

The previous prime is 656485057. The next prime is 656485069. The reversal of 656485064 is 460584656.

It can be written as a sum of positive squares in 2 ways, for example, as 617522500 + 38962564 = 24850^2 + 6242^2 .

It is not an unprimeable number, because it can be changed into a prime (656485069) 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, 1414607 + ... + 1415070.

Almost surely, 2^656485064 is an apocalyptic number.

It is an amenable number.

656485064 is a deficient number, since it is larger than the sum of its proper divisors (616870036).

656485064 is a wasteful number, since it uses less digits than its factorization.

656485064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829712 (or 2829708 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The square root of 656485064 is about 25621.9644836223. The cubic root of 656485064 is about 869.1104061344.

The spelling of 656485064 in words is "six hundred fifty-six million, four hundred eighty-five thousand, sixty-four".