12631689 has 24 divisors (see below), whose sum is σ = 21419840. Its totient is φ = 7021728.

The previous prime is 12631679. The next prime is 12631693. The reversal of 12631689 is 98613621.

12631689 is a `hidden beast` number, since 12 + 631 + 6 + 8 + 9 = 666.

It is not a de Polignac number, because 12631689 - 2¹⁷ = 12500617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12631609) 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 23 ways as a sum of consecutive naturals, for example, 379 + ... + 5040.

Almost surely, 2^12631689 is an apocalyptic number.

It is an amenable number.

12631689 is a deficient number, since it is larger than the sum of its proper divisors (8788151).

12631689 is a wasteful number, since it uses less digits than its factorization.

12631689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5469 (or 5466 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 12631689 is about 3554.1087490396. The cubic root of 12631689 is about 232.8915912143.

The spelling of 12631689 in words is "twelve million, six hundred thirty-one thousand, six hundred eighty-nine".