12620664 has 128 divisors (see below), whose sum is σ = 42508800. Its totient is φ = 3386880.

The previous prime is 12620653. The next prime is 12620677. The reversal of 12620664 is 46602621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25459 + ... + 25949.

It is an arithmetic number, because the mean of its divisors is an integer number (332100).

Almost surely, 2^12620664 is an apocalyptic number.

12620664 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 12620664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21254400).

12620664 is an abundant number, since it is smaller than the sum of its proper divisors (29888136).

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

12620664 is a wasteful number, since it uses less digits than its factorization.

12620664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 12620664 is about 3552.5573886990. The cubic root of 12620664 is about 232.8238151851.

The spelling of 12620664 in words is "twelve million, six hundred twenty thousand, six hundred sixty-four".