656794384 has 45 divisors (see below), whose sum is σ = 1311623733. Its totient is φ = 318607296.

The previous prime is 656794351. The next prime is 656794393. The reversal of 656794384 is 483497656.

656794384 = 2568² + 2569² + ... + 2663².

The square root of 656794384 is 25628.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 76947984 + 579846400 = 8772^2 + 24080^2 .

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 4407942 + ... + 4408090.

Almost surely, 2^656794384 is an apocalyptic number.

656794384 is the 25628-th square number.

It is an amenable number.

656794384 is a deficient number, since it is larger than the sum of its proper divisors (654829349).

656794384 is an equidigital number, since it uses as much as digits as its factorization.

656794384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 194 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The cubic root of 656794384 is about 869.2468860200.

The spelling of 656794384 in words is "six hundred fifty-six million, seven hundred ninety-four thousand, three hundred eighty-four".