23638564 has 12 divisors (see below), whose sum is σ = 41471500. Its totient is φ = 11789568.

The previous prime is 23638553. The next prime is 23638579. The reversal of 23638564 is 46583632.

It can be written as a sum of positive squares in 2 ways, for example, as 22638564 + 1000000 = 4758^2 + 1000^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5589 + ... + 8860.

Almost surely, 2^23638564 is an apocalyptic number.

It is an amenable number.

23638564 is a deficient number, since it is larger than the sum of its proper divisors (17832936).

23638564 is a wasteful number, since it uses less digits than its factorization.

23638564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14862 (or 14860 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 23638564 is about 4861.9506373471. The cubic root of 23638564 is about 286.9945811924.

The spelling of 23638564 in words is "twenty-three million, six hundred thirty-eight thousand, five hundred sixty-four".