12618664 has 16 divisors (see below), whose sum is σ = 24107220. Its totient is φ = 6190080.

The previous prime is 12618653. The next prime is 12618667. The reversal of 12618664 is 46681621.

It can be written as a sum of positive squares in 2 ways, for example, as 12545764 + 72900 = 3542^2 + 270^2 .

It is a super-2 number, since 2×12618664² = 318461362289792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12618667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14457 + ... + 15304.

Almost surely, 2^12618664 is an apocalyptic number.

It is an amenable number.

12618664 is a deficient number, since it is larger than the sum of its proper divisors (11488556).

12618664 is a wasteful number, since it uses less digits than its factorization.

12618664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29820 (or 29816 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 12618664 is about 3552.2758901865. The cubic root of 12618664 is about 232.8115159846.

The spelling of 12618664 in words is "twelve million, six hundred eighteen thousand, six hundred sixty-four".