12564536 has 16 divisors (see below), whose sum is σ = 23945640. Its totient is φ = 6179040.

The previous prime is 12564527. The next prime is 12564599. The reversal of 12564536 is 63546521.

It is a congruent number.

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, 12386 + ... + 13361.

Almost surely, 2^12564536 is an apocalyptic number.

It is an amenable number.

12564536 is a deficient number, since it is larger than the sum of its proper divisors (11381104).

12564536 is a wasteful number, since it uses less digits than its factorization.

12564536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25814 (or 25810 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 12564536 is about 3544.6489247879. The cubic root of 12564536 is about 232.4781557309.

The spelling of 12564536 in words is "twelve million, five hundred sixty-four thousand, five hundred thirty-six".