56688489 has 48 divisors (see below), whose sum is σ = 101896704. Its totient is φ = 29836800.

The previous prime is 56688487. The next prime is 56688497. The reversal of 56688489 is 98488665.

It is a happy number.

It is not a de Polignac number, because 56688489 - 2¹ = 56688487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56688481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20584 + ... + 23174.

It is an arithmetic number, because the mean of its divisors is an integer number (2122848).

Almost surely, 2^56688489 is an apocalyptic number.

It is an amenable number.

56688489 is a deficient number, since it is larger than the sum of its proper divisors (45208215).

56688489 is a wasteful number, since it uses less digits than its factorization.

56688489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638 (or 2635 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 56688489 is about 7529.1758513133. The cubic root of 56688489 is about 384.1477499470.

The spelling of 56688489 in words is "fifty-six million, six hundred eighty-eight thousand, four hundred eighty-nine".