56640699 has 12 divisors (see below), whose sum is σ = 82625712. Its totient is φ = 37386000.

The previous prime is 56640679. The next prime is 56640739. The reversal of 56640699 is 99604665.

It is not a de Polignac number, because 56640699 - 2⁸ = 56640443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56640659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30247 + ... + 32064.

It is an arithmetic number, because the mean of its divisors is an integer number (6885476).

Almost surely, 2^56640699 is an apocalyptic number.

56640699 is a deficient number, since it is larger than the sum of its proper divisors (25985013).

56640699 is a wasteful number, since it uses less digits than its factorization.

56640699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62418 (or 62415 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 56640699 is about 7526.0015280360. The cubic root of 56640699 is about 384.0397704577.

The spelling of 56640699 in words is "fifty-six million, six hundred forty thousand, six hundred ninety-nine".