12664624 has 40 divisors (see below), whose sum is σ = 28445600. Its totient is φ = 5349888.

The previous prime is 12664607. The next prime is 12664669. The reversal of 12664624 is 42646621.

It is a super-2 number, since 2×12664624² = 320785402122752, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7402 + ... + 8950.

It is an arithmetic number, because the mean of its divisors is an integer number (711140).

Almost surely, 2^12664624 is an apocalyptic number.

12664624 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12664624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14222800).

12664624 is an abundant number, since it is smaller than the sum of its proper divisors (15780976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12664624 is a wasteful number, since it uses less digits than its factorization.

12664624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637 (or 1631 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 12664624 is about 3558.7391025474. The cubic root of 12664624 is about 233.0938240767.

The spelling of 12664624 in words is "twelve million, six hundred sixty-four thousand, six hundred twenty-four".