56644615 has 8 divisors (see below), whose sum is σ = 68160960. Its totient is φ = 45190752.

The previous prime is 56644613. The next prime is 56644639. The reversal of 56644615 is 51644665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56644615 - 2¹ = 56644613 is a prime.

It is a super-2 number, since 2×56644615² = 6417224816996450, 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13600 + ... + 17269.

It is an arithmetic number, because the mean of its divisors is an integer number (8520120).

Almost surely, 2^56644615 is an apocalyptic number.

56644615 is a deficient number, since it is larger than the sum of its proper divisors (11516345).

56644615 is a wasteful number, since it uses less digits than its factorization.

56644615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31241.

The product of its digits is 86400, while the sum is 37.

The square root of 56644615 is about 7526.2616882487. The cubic root of 56644615 is about 384.0486207786.

The spelling of 56644615 in words is "fifty-six million, six hundred forty-four thousand, six hundred fifteen".