12513656 has 32 divisors (see below), whose sum is σ = 25021440. Its totient is φ = 5853408.

The previous prime is 12513653. The next prime is 12513689. The reversal of 12513656 is 65631521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12513653) 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, 7925 + ... + 9371.

It is an arithmetic number, because the mean of its divisors is an integer number (781920).

Almost surely, 2^12513656 is an apocalyptic number.

It is an amenable number.

12513656 is a deficient number, since it is larger than the sum of its proper divisors (12507784).

12513656 is a wasteful number, since it uses less digits than its factorization.

12513656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523 (or 1519 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 12513656 is about 3537.4646287984. The cubic root of 12513656 is about 232.1639249722.

The spelling of 12513656 in words is "twelve million, five hundred thirteen thousand, six hundred fifty-six".