12564705 has 16 divisors (see below), whose sum is σ = 20147904. Its totient is φ = 6686400.

The previous prime is 12564697. The next prime is 12564709. The reversal of 12564705 is 50746521.

It is not a de Polignac number, because 12564705 - 2³ = 12564697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12564709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11430 + ... + 12480.

It is an arithmetic number, because the mean of its divisors is an integer number (1259244).

Almost surely, 2^12564705 is an apocalyptic number.

12564705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12564705 is a deficient number, since it is larger than the sum of its proper divisors (7583199).

12564705 is a wasteful number, since it uses less digits than its factorization.

12564705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 12564705 is about 3544.6727634579. The cubic root of 12564705 is about 232.4791980464.

The spelling of 12564705 in words is "twelve million, five hundred sixty-four thousand, seven hundred five".