12631679 has 2 divisors, whose sum is σ = 12631680. Its totient is φ = 12631678.

The previous prime is 12631667. The next prime is 12631693. The reversal of 12631679 is 97613621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12631679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12631609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6315839 + 6315840.

It is an arithmetic number, because the mean of its divisors is an integer number (6315840).

Almost surely, 2^12631679 is an apocalyptic number.

12631679 is a deficient number, since it is larger than the sum of its proper divisors (1).

12631679 is an equidigital number, since it uses as much as digits as its factorization.

12631679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 12631679 is about 3554.1073422169. The cubic root of 12631679 is about 232.8915297573.

The spelling of 12631679 in words is "twelve million, six hundred thirty-one thousand, six hundred seventy-nine".