656552464 has 10 divisors (see below), whose sum is σ = 1272070430. Its totient is φ = 328276224.

The previous prime is 656552417. The next prime is 656552521. The reversal of 656552464 is 464255656.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 655360000 + 1192464 = 25600^2 + 1092^2 .

It is a super-2 number, since 2×656552464² = 862122275968942592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 656552464.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20517249 + ... + 20517280.

It is an arithmetic number, because the mean of its divisors is an integer number (127207043).

Almost surely, 2^656552464 is an apocalyptic number.

It is an amenable number.

656552464 is a deficient number, since it is larger than the sum of its proper divisors (615517966).

656552464 is a wasteful number, since it uses less digits than its factorization.

656552464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41034537 (or 41034531 counting only the distinct ones).

The product of its digits is 864000, while the sum is 43.

The square root of 656552464 is about 25623.2797276227. The cubic root of 656552464 is about 869.1401483885.

The spelling of 656552464 in words is "six hundred fifty-six million, five hundred fifty-two thousand, four hundred sixty-four".