56668736 has 14 divisors (see below), whose sum is σ = 112452150. Its totient is φ = 28334336.

The previous prime is 56668727. The next prime is 56668741. The reversal of 56668736 is 63786665.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 56550400 + 118336 = 7520^2 + 344^2 .

It is a super-2 number, since 2×56668736² = 6422691279675392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442661 + ... + 442788.

Almost surely, 2^56668736 is an apocalyptic number.

It is an amenable number.

56668736 is a deficient number, since it is larger than the sum of its proper divisors (55783414).

56668736 is an equidigital number, since it uses as much as digits as its factorization.

56668736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885461 (or 885451 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The square root of 56668736 is about 7527.8639732663. The cubic root of 56668736 is about 384.1031262373.

The spelling of 56668736 in words is "fifty-six million, six hundred sixty-eight thousand, seven hundred thirty-six".