15664412 has 24 divisors (see below), whose sum is σ = 29183616. Its totient is φ = 7331328.

The previous prime is 15664409. The next prime is 15664421. The reversal of 15664412 is 21446651.

15664412 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14648 + ... + 15680.

It is an arithmetic number, because the mean of its divisors is an integer number (1215984).

Almost surely, 2^15664412 is an apocalyptic number.

It is an amenable number.

15664412 is a deficient number, since it is larger than the sum of its proper divisors (13519204).

15664412 is a wasteful number, since it uses less digits than its factorization.

15664412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277 (or 1275 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 15664412 is about 3957.8292029849. The cubic root of 15664412 is about 250.2100208489.

The spelling of 15664412 in words is "fifteen million, six hundred sixty-four thousand, four hundred twelve".