56640927 has 16 divisors (see below), whose sum is σ = 90063360. Its totient is φ = 30958752.

The previous prime is 56640917. The next prime is 56640949. The reversal of 56640927 is 72904665.

56640927 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56640927 - 2⁸ = 56640671 is a prime.

It is a super-2 number, since 2×56640927² = 6416389222838658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56640907) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 58152 + ... + 59117.

It is an arithmetic number, because the mean of its divisors is an integer number (5628960).

Almost surely, 2^56640927 is an apocalyptic number.

56640927 is a deficient number, since it is larger than the sum of its proper divisors (33422433).

56640927 is a wasteful number, since it uses less digits than its factorization.

56640927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117302.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 56640927 is about 7526.0166755064. The cubic root of 56640927 is about 384.0402857582.

The spelling of 56640927 in words is "fifty-six million, six hundred forty thousand, nine hundred twenty-seven".