12855564 has 24 divisors (see below), whose sum is σ = 33329520. Its totient is φ = 4285152.

The previous prime is 12855529. The next prime is 12855589. The reversal of 12855564 is 46555821.

12855564 is a `hidden beast` number, since 12 + 85 + 5 + 564 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59409 + ... + 59624.

It is an arithmetic number, because the mean of its divisors is an integer number (1388730).

Almost surely, 2^12855564 is an apocalyptic number.

It is an amenable number.

12855564 is an abundant number, since it is smaller than the sum of its proper divisors (20473956).

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

12855564 is a wasteful number, since it uses less digits than its factorization.

12855564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119046 (or 119038 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 12855564 is about 3585.4656601340. The cubic root of 12855564 is about 234.2594098821.

The spelling of 12855564 in words is "twelve million, eight hundred fifty-five thousand, five hundred sixty-four".