12739668 has 24 divisors (see below), whose sum is σ = 30135168. Its totient is φ = 4188096.

The previous prime is 12739651. The next prime is 12739669. The reversal of 12739668 is 86693721.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12739669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6396 + ... + 8147.

It is an arithmetic number, because the mean of its divisors is an integer number (1255632).

Almost surely, 2^12739668 is an apocalyptic number.

It is an amenable number.

12739668 is an abundant number, since it is smaller than the sum of its proper divisors (17395500).

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

12739668 is a wasteful number, since it uses less digits than its factorization.

12739668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14623 (or 14621 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 12739668 is about 3569.2671516713. The cubic root of 12739668 is about 233.5533154425.

The spelling of 12739668 in words is "twelve million, seven hundred thirty-nine thousand, six hundred sixty-eight".