12620644 has 12 divisors (see below), whose sum is σ = 22246000. Its totient is φ = 6264648.

The previous prime is 12620633. The next prime is 12620653. The reversal of 12620644 is 44602621.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10794 + ... + 11905.

Almost surely, 2^12620644 is an apocalyptic number.

It is an amenable number.

12620644 is a deficient number, since it is larger than the sum of its proper divisors (9625356).

12620644 is a wasteful number, since it uses less digits than its factorization.

12620644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22842 (or 22840 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 12620644 is about 3552.5545738243. The cubic root of 12620644 is about 232.8236921995.

The spelling of 12620644 in words is "twelve million, six hundred twenty thousand, six hundred forty-four".