12866315 has 32 divisors (see below), whose sum is σ = 20100096. Its totient is φ = 7666560.

The previous prime is 12866311. The next prime is 12866339. The reversal of 12866315 is 51366821.

It is a happy number.

It is not a de Polignac number, because 12866315 - 2² = 12866311 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12866311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8129 + ... + 9581.

It is an arithmetic number, because the mean of its divisors is an integer number (628128).

Almost surely, 2^12866315 is an apocalyptic number.

12866315 is a deficient number, since it is larger than the sum of its proper divisors (7233781).

12866315 is a wasteful number, since it uses less digits than its factorization.

12866315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499.

The product of its digits is 8640, while the sum is 32.

The square root of 12866315 is about 3586.9645941938. The cubic root of 12866315 is about 234.3246947442.

The spelling of 12866315 in words is "twelve million, eight hundred sixty-six thousand, three hundred fifteen".