656155568 has 10 divisors (see below), whose sum is σ = 1271301444. Its totient is φ = 328077776.

The previous prime is 656155553. The next prime is 656155571. The reversal of 656155568 is 865551656.

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 as a sum of consecutive naturals, namely, 20504846 + ... + 20504877.

Almost surely, 2^656155568 is an apocalyptic number.

It is an amenable number.

656155568 is a deficient number, since it is larger than the sum of its proper divisors (615145876).

656155568 is a wasteful number, since it uses less digits than its factorization.

656155568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41009731 (or 41009725 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 47.

The square root of 656155568 is about 25615.5337246757. The cubic root of 656155568 is about 868.9649769176.

The spelling of 656155568 in words is "six hundred fifty-six million, one hundred fifty-five thousand, five hundred sixty-eight".