12564660 has 48 divisors (see below), whose sum is σ = 35392896. Its totient is φ = 3330432.

The previous prime is 12564637. The next prime is 12564667. The reversal of 12564660 is 6646521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12564667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11289 + ... + 12351.

It is an arithmetic number, because the mean of its divisors is an integer number (737352).

Almost surely, 2^12564660 is an apocalyptic number.

12564660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12564660 is an abundant number, since it is smaller than the sum of its proper divisors (22828236).

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

12564660 is a wasteful number, since it uses less digits than its factorization.

12564660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 12564660 is about 3544.6664158987. Note that the first 3 decimals coincide. The cubic root of 12564660 is about 232.4789205077.

The spelling of 12564660 in words is "twelve million, five hundred sixty-four thousand, six hundred sixty".