12756879 has 8 divisors (see below), whose sum is σ = 18899120. Its totient is φ = 8504568.

The previous prime is 12756871. The next prime is 12756883. The reversal of 12756879 is 97865721.

12756879 is a `hidden beast` number, since 12 + 7 + 568 + 79 = 666.

It is not a de Polignac number, because 12756879 - 2³ = 12756871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12756871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236212 + ... + 236265.

It is an arithmetic number, because the mean of its divisors is an integer number (2362390).

Almost surely, 2^12756879 is an apocalyptic number.

12756879 is a deficient number, since it is larger than the sum of its proper divisors (6142241).

12756879 is an equidigital number, since it uses as much as digits as its factorization.

12756879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472486 (or 472480 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 12756879 is about 3571.6773370505. The cubic root of 12756879 is about 233.6584431769.

The spelling of 12756879 in words is "twelve million, seven hundred fifty-six thousand, eight hundred seventy-nine".