12506879 has 16 divisors (see below), whose sum is σ = 15863040. Its totient is φ = 9576960.

The previous prime is 12506869. The next prime is 12506881. The reversal of 12506879 is 97860521.

It is a cyclic number.

It is not a de Polignac number, because 12506879 - 2²⁰ = 11458303 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 (12506869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3167 + ... + 5919.

It is an arithmetic number, because the mean of its divisors is an integer number (991440).

Almost surely, 2^12506879 is an apocalyptic number.

12506879 is a deficient number, since it is larger than the sum of its proper divisors (3356161).

12506879 is a wasteful number, since it uses less digits than its factorization.

12506879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 12506879 is about 3536.5066096361. The cubic root of 12506879 is about 232.1220065263.

The spelling of 12506879 in words is "twelve million, five hundred six thousand, eight hundred seventy-nine".