12564507 has 8 divisors (see below), whose sum is σ = 16925776. Its totient is φ = 8289792.

The previous prime is 12564481. The next prime is 12564521. The reversal of 12564507 is 70546521.

12564507 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12564507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12564527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21298 + ... + 21879.

It is an arithmetic number, because the mean of its divisors is an integer number (2115722).

Almost surely, 2^12564507 is an apocalyptic number.

12564507 is a deficient number, since it is larger than the sum of its proper divisors (4361269).

12564507 is an equidigital number, since it uses as much as digits as its factorization.

12564507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43277.

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

The square root of 12564507 is about 3544.6448341124. The cubic root of 12564507 is about 232.4779768711.

The spelling of 12564507 in words is "twelve million, five hundred sixty-four thousand, five hundred seven".