12857564 has 12 divisors (see below), whose sum is σ = 22554000. Its totient is φ = 6413568.

The previous prime is 12857557. The next prime is 12857567. The reversal of 12857564 is 46575821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12857567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1784 + ... + 5375.

It is an arithmetic number, because the mean of its divisors is an integer number (1879500).

Almost surely, 2^12857564 is an apocalyptic number.

It is an amenable number.

12857564 is a deficient number, since it is larger than the sum of its proper divisors (9696436).

12857564 is a wasteful number, since it uses less digits than its factorization.

12857564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7612 (or 7610 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 12857564 is about 3585.7445530880. The cubic root of 12857564 is about 234.2715575282.

The spelling of 12857564 in words is "twelve million, eight hundred fifty-seven thousand, five hundred sixty-four".