656418466 has 24 divisors (see below), whose sum is σ = 1083615372. Its totient is φ = 298003200.

The previous prime is 656418437. The next prime is 656418481. The reversal of 656418466 is 664814656.

It can be written as a sum of positive squares in 2 ways, for example, as 654080625 + 2337841 = 25575^2 + 1529^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 328366 + ... + 330358.

Almost surely, 2^656418466 is an apocalyptic number.

656418466 is a deficient number, since it is larger than the sum of its proper divisors (427196906).

656418466 is a wasteful number, since it uses less digits than its factorization.

656418466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378 (or 3367 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The square root of 656418466 is about 25620.6648235365. The cubic root of 656418466 is about 869.0810157870.

The spelling of 656418466 in words is "six hundred fifty-six million, four hundred eighteen thousand, four hundred sixty-six".