56644065 has 24 divisors (see below), whose sum is σ = 98415720. Its totient is φ = 30138624.

The previous prime is 56644061. The next prime is 56644069. The reversal of 56644065 is 56044665.

It is a happy number.

56644065 is a `hidden beast` number, since 5 + 6 + 644 + 0 + 6 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (56644061) and next prime (56644069).

It can be written as a sum of positive squares in 4 ways, for example, as 19079424 + 37564641 = 4368^2 + 6129^2 .

It is not a de Polignac number, because 56644065 - 2² = 56644061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56644061) 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 23 ways as a sum of consecutive naturals, for example, 21669 + ... + 24141.

It is an arithmetic number, because the mean of its divisors is an integer number (4100655).

Almost surely, 2^56644065 is an apocalyptic number.

It is an amenable number.

56644065 is a deficient number, since it is larger than the sum of its proper divisors (41771655).

56644065 is a wasteful number, since it uses less digits than its factorization.

56644065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993 (or 2990 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 56644065 is about 7526.2251494358. The cubic root of 56644065 is about 384.0473777806.

The spelling of 56644065 in words is "fifty-six million, six hundred forty-four thousand, sixty-five".