12556864 has 14 divisors (see below), whose sum is σ = 24917654. Its totient is φ = 6278400.

The previous prime is 12556811. The next prime is 12556867. The reversal of 12556864 is 46865521.

12556864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12390400 + 166464 = 3520^2 + 408^2 .

It is not an unprimeable number, because it can be changed into a prime (12556867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98037 + ... + 98164.

Almost surely, 2^12556864 is an apocalyptic number.

It is an amenable number.

12556864 is a deficient number, since it is larger than the sum of its proper divisors (12360790).

12556864 is an equidigital number, since it uses as much as digits as its factorization.

12556864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196213 (or 196203 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 12556864 is about 3543.5665649173. The cubic root of 12556864 is about 232.4308284611.

The spelling of 12556864 in words is "twelve million, five hundred fifty-six thousand, eight hundred sixty-four".