12662631 has 6 divisors (see below), whose sum is σ = 18290480. Its totient is φ = 8441748.

The previous prime is 12662623. The next prime is 12662641. The reversal of 12662631 is 13626621.

12662631 is a `hidden beast` number, since 1 + 2 + 6 + 626 + 31 = 666.

It is not a de Polignac number, because 12662631 - 2³ = 12662623 is a prime.

It is a super-2 number, since 2×12662631² = 320684447684322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12662595 and 12662604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12662641) 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 in 5 ways as a sum of consecutive naturals, for example, 703471 + ... + 703488.

Almost surely, 2^12662631 is an apocalyptic number.

12662631 is a deficient number, since it is larger than the sum of its proper divisors (5627849).

12662631 is a wasteful number, since it uses less digits than its factorization.

12662631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406965 (or 1406962 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 12662631 is about 3558.4590766229. The cubic root of 12662631 is about 233.0815963058.

The spelling of 12662631 in words is "twelve million, six hundred sixty-two thousand, six hundred thirty-one".