56627691 has 16 divisors (see below), whose sum is σ = 79587360. Its totient is φ = 35759360.

The previous prime is 56627687. The next prime is 56627707. The reversal of 56627691 is 19672665.

It is a cyclic number.

It is not a de Polignac number, because 56627691 - 2² = 56627687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56627611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1530 + ... + 10751.

It is an arithmetic number, because the mean of its divisors is an integer number (4974210).

Almost surely, 2^56627691 is an apocalyptic number.

56627691 is a deficient number, since it is larger than the sum of its proper divisors (22959669).

56627691 is a wasteful number, since it uses less digits than its factorization.

56627691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12366.

The product of its digits is 136080, while the sum is 42.

The square root of 56627691 is about 7525.1372744954. The cubic root of 56627691 is about 384.0103689149.

The spelling of 56627691 in words is "fifty-six million, six hundred twenty-seven thousand, six hundred ninety-one".