12724664 has 16 divisors (see below), whose sum is σ = 24309720. Its totient is φ = 6242080.

The previous prime is 12724651. The next prime is 12724667. The reversal of 12724664 is 46642721.

12724664 is a modest number, since divided by 4664 gives 1272 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 12724664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12724667) 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, 14582 + ... + 15429.

Almost surely, 2^12724664 is an apocalyptic number.

It is an amenable number.

12724664 is a deficient number, since it is larger than the sum of its proper divisors (11585056).

12724664 is a wasteful number, since it uses less digits than its factorization.

12724664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30070 (or 30066 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 12724664 is about 3567.1647004309. The cubic root of 12724664 is about 233.4615911648.

It can be divided in two parts, 12 and 724664, that multiplied together give a palindrome (8695968).

The spelling of 12724664 in words is "twelve million, seven hundred twenty-four thousand, six hundred sixty-four".