12664704 has 128 divisors (see below), whose sum is σ = 37699200. Its totient is φ = 3741696.

The previous prime is 12664699. The next prime is 12664723. The reversal of 12664704 is 40746621.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214627 + ... + 214685.

It is an arithmetic number, because the mean of its divisors is an integer number (294525).

Almost surely, 2^12664704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12664704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18849600).

12664704 is an abundant number, since it is smaller than the sum of its proper divisors (25034496).

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

12664704 is a wasteful number, since it uses less digits than its factorization.

12664704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 12664704 is about 3558.7503424657. The cubic root of 12664704 is about 233.0943148787.

The spelling of 12664704 in words is "twelve million, six hundred sixty-four thousand, seven hundred four".