12664664 has 16 divisors (see below), whose sum is σ = 23814600. Its totient is φ = 6314112.

The previous prime is 12664607. The next prime is 12664669. The reversal of 12664664 is 46646621.

12664664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944 + ... + 5120.

Almost surely, 2^12664664 is an apocalyptic number.

It is an amenable number.

12664664 is a deficient number, since it is larger than the sum of its proper divisors (11149936).

12664664 is a wasteful number, since it uses less digits than its factorization.

12664664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4562 (or 4558 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 12664664 is about 3558.7447225110. The cubic root of 12664664 is about 233.0940694780.

The spelling of 12664664 in words is "twelve million, six hundred sixty-four thousand, six hundred sixty-four".