12668615 has 24 divisors (see below), whose sum is σ = 16467072. Its totient is φ = 9339840.

The previous prime is 12668609. The next prime is 12668627. The reversal of 12668615 is 51686621.

12668615 = 496² + 497² + ... + 542².

It is a happy number.

12668615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12668615 - 2¹⁰ = 12667591 is a prime.

Its product of digits (17280) is a multiple of the sum of its prime divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269522 + ... + 269568.

It is an arithmetic number, because the mean of its divisors is an integer number (686128).

Almost surely, 2^12668615 is an apocalyptic number.

12668615 is a deficient number, since it is larger than the sum of its proper divisors (3798457).

12668615 is an equidigital number, since it uses as much as digits as its factorization.

12668615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 120 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 12668615 is about 3559.2997906892. The cubic root of 12668615 is about 233.1183064393.

The spelling of 12668615 in words is "twelve million, six hundred sixty-eight thousand, six hundred fifteen".