12609636 has 24 divisors (see below), whose sum is σ = 31686144. Its totient is φ = 3879840.

The previous prime is 12609613. The next prime is 12609643. The reversal of 12609636 is 63690621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12609597 and 12609606.

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, 40260 + ... + 40571.

It is an arithmetic number, because the mean of its divisors is an integer number (1320256).

Almost surely, 2^12609636 is an apocalyptic number.

It is an amenable number.

12609636 is an abundant number, since it is smaller than the sum of its proper divisors (19076508).

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

12609636 is a wasteful number, since it uses less digits than its factorization.

12609636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80851 (or 80849 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 12609636 is about 3551.0049281858. The cubic root of 12609636 is about 232.7559812145.

The spelling of 12609636 in words is "twelve million, six hundred nine thousand, six hundred thirty-six".