12664790 has 16 divisors (see below), whose sum is σ = 23327568. Its totient is φ = 4947936.

The previous prime is 12664781. The next prime is 12664807. The reversal of 12664790 is 9746621.

It is a self number, because there is not a number n which added to its sum of digits gives 12664790.

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, 14297 + ... + 15156.

It is an arithmetic number, because the mean of its divisors is an integer number (1457973).

Almost surely, 2^12664790 is an apocalyptic number.

12664790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12664790 is a deficient number, since it is larger than the sum of its proper divisors (10662778).

12664790 is a wasteful number, since it uses less digits than its factorization.

12664790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29503.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 12664790 is about 3558.7624253383. The cubic root of 12664790 is about 233.0948424885.

The spelling of 12664790 in words is "twelve million, six hundred sixty-four thousand, seven hundred ninety".