12664000 has 56 divisors (see below), whose sum is σ = 31382208. Its totient is φ = 5062400.

The previous prime is 12663991. The next prime is 12664019. The reversal of 12664000 is 46621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7209 + ... + 8791.

Almost surely, 2^12664000 is an apocalyptic number.

12664000 is a gapful number since it is divisible by the number (10) 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 12664000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15691104).

12664000 is an abundant number, since it is smaller than the sum of its proper divisors (18718208).

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

12664000 is an equidigital number, since it uses as much as digits as its factorization.

12664000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610 (or 1590 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 12664000 is about 3558.6514299661. The cubic root of 12664000 is about 233.0899957506.

The spelling of 12664000 in words is "twelve million, six hundred sixty-four thousand".