655968072 has 64 divisors (see below), whose sum is σ = 1673311680. Its totient is φ = 214244352.

The previous prime is 655968041. The next prime is 655968097. The reversal of 655968072 is 270869556.

It is a happy number.

It is a super-2 number, since 2×655968072² = 860588222966794368, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 284428 + ... + 286724.

It is an arithmetic number, because the mean of its divisors is an integer number (26145495).

Almost surely, 2^655968072 is an apocalyptic number.

It is an amenable number.

655968072 is an abundant number, since it is smaller than the sum of its proper divisors (1017343608).

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

655968072 is a wasteful number, since it uses less digits than its factorization.

655968072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542 (or 2538 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 655968072 is about 25611.8736526635. The cubic root of 655968072 is about 868.8822003188.

The spelling of 655968072 in words is "six hundred fifty-five million, nine hundred sixty-eight thousand, seventy-two".