12696631 has 2 divisors, whose sum is σ = 12696632. Its totient is φ = 12696630.

The previous prime is 12696611. The next prime is 12696641. The reversal of 12696631 is 13669621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12696631 - 2²³ = 4308023 is a prime.

It is a super-2 number, since 2×12696631² = 322408877500322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12696611) 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 as a sum of consecutive naturals, namely, 6348315 + 6348316.

It is an arithmetic number, because the mean of its divisors is an integer number (6348316).

Almost surely, 2^12696631 is an apocalyptic number.

12696631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12696631 is an equidigital number, since it uses as much as digits as its factorization.

12696631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 12696631 is about 3563.2332227908. The cubic root of 12696631 is about 233.2900230272.

The spelling of 12696631 in words is "twelve million, six hundred ninety-six thousand, six hundred thirty-one".