12506631 has 8 divisors (see below), whose sum is σ = 16746240. Its totient is φ = 8302392.

The previous prime is 12506587. The next prime is 12506651. The reversal of 12506631 is 13660521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12506631 - 2⁶ = 12506567 is a prime.

It is a super-2 number, since 2×12506631² = 312831637940322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8005 + ... + 9438.

It is an arithmetic number, because the mean of its divisors is an integer number (2093280).

Almost surely, 2^12506631 is an apocalyptic number.

12506631 is a deficient number, since it is larger than the sum of its proper divisors (4239609).

12506631 is a wasteful number, since it uses less digits than its factorization.

12506631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17685.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 12506631 is about 3536.4715466125. The cubic root of 12506631 is about 232.1204722603.

The spelling of 12506631 in words is "twelve million, five hundred six thousand, six hundred thirty-one".