56644623 has 32 divisors (see below), whose sum is σ = 96837120. Its totient is φ = 32054400.

The previous prime is 56644613. The next prime is 56644639. The reversal of 56644623 is 32644665.

56644623 is a `hidden beast` number, since 5 + 6 + 644 + 6 + 2 + 3 = 666.

It is not a de Polignac number, because 56644623 - 2⁵ = 56644591 is a prime.

It is a super-2 number, since 2×56644623² = 6417226629624258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56644613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18823 + ... + 21623.

It is an arithmetic number, because the mean of its divisors is an integer number (3026160).

Almost surely, 2^56644623 is an apocalyptic number.

56644623 is a deficient number, since it is larger than the sum of its proper divisors (40192497).

56644623 is a wasteful number, since it uses less digits than its factorization.

56644623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924 (or 2918 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 56644623 is about 7526.2622197210. The cubic root of 56644623 is about 384.0486388585.

The spelling of 56644623 in words is "fifty-six million, six hundred forty-four thousand, six hundred twenty-three".