56989644 has 36 divisors (see below), whose sum is σ = 141266664. Its totient is φ = 17878016.

The previous prime is 56989609. The next prime is 56989697. The reversal of 56989644 is 44698965.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4749 + ... + 11684.

It is an arithmetic number, because the mean of its divisors is an integer number (3924074).

Almost surely, 2^56989644 is an apocalyptic number.

It is an amenable number.

56989644 is an abundant number, since it is smaller than the sum of its proper divisors (84277020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56989644 is a wasteful number, since it uses less digits than its factorization.

56989644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16474 (or 16455 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The square root of 56989644 is about 7549.1485612617. The cubic root of 56989644 is about 384.8268046530.

The spelling of 56989644 in words is "fifty-six million, nine hundred eighty-nine thousand, six hundred forty-four".