56727657 has 24 divisors (see below), whose sum is σ = 99156096. Its totient is φ = 30508416.

The previous prime is 56727653. The next prime is 56727659. The reversal of 56727657 is 75672765.

56727657 is a `hidden beast` number, since 567 + 27 + 65 + 7 = 666.

It is not a de Polignac number, because 56727657 - 2² = 56727653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56727653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25413 + ... + 27554.

It is an arithmetic number, because the mean of its divisors is an integer number (4131504).

Almost surely, 2^56727657 is an apocalyptic number.

It is an amenable number.

56727657 is a deficient number, since it is larger than the sum of its proper divisors (42428439).

56727657 is a wasteful number, since it uses less digits than its factorization.

56727657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52997 (or 52994 counting only the distinct ones).

The product of its digits is 617400, while the sum is 45.

The square root of 56727657 is about 7531.7764836724. The cubic root of 56727657 is about 384.2362031488.

It can be divided in two parts, 567 and 27657, that added together give a square (28224 = 168²).

The spelling of 56727657 in words is "fifty-six million, seven hundred twenty-seven thousand, six hundred fifty-seven".