12779868 has 12 divisors (see below), whose sum is σ = 29819720. Its totient is φ = 4259952.

The previous prime is 12779861. The next prime is 12779917. The reversal of 12779868 is 86897721.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12779861) 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, 532483 + ... + 532506.

Almost surely, 2^12779868 is an apocalyptic number.

It is an amenable number.

12779868 is an abundant number, since it is smaller than the sum of its proper divisors (17039852).

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

12779868 is a wasteful number, since it uses less digits than its factorization.

12779868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064996 (or 1064994 counting only the distinct ones).

The product of its digits is 338688, while the sum is 48.

The square root of 12779868 is about 3574.8941243063. The cubic root of 12779868 is about 233.7987165279.

The spelling of 12779868 in words is "twelve million, seven hundred seventy-nine thousand, eight hundred sixty-eight".