12956679 has 20 divisors (see below), whose sum is σ = 19555536. Its totient is φ = 8548416.

The previous prime is 12956663. The next prime is 12956681. The reversal of 12956679 is 97665921.

It is a happy number.

12956679 is a `hidden beast` number, since 12 + 9 + 566 + 79 = 666.

It is not a de Polignac number, because 12956679 - 2⁴ = 12956663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12954679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7567 + ... + 9119.

Almost surely, 2^12956679 is an apocalyptic number.

12956679 is a deficient number, since it is larger than the sum of its proper divisors (6598857).

12956679 is a wasteful number, since it uses less digits than its factorization.

12956679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668 (or 1659 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 12956679 is about 3599.5387204474. The cubic root of 12956679 is about 234.8719930595.

The spelling of 12956679 in words is "twelve million, nine hundred fifty-six thousand, six hundred seventy-nine".