12866117 has 4 divisors (see below), whose sum is σ = 14035776. Its totient is φ = 11696460.

The previous prime is 12866101. The next prime is 12866129. The reversal of 12866117 is 71166821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12866117 - 2⁴ = 12866101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866137) 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, 584813 + ... + 584834.

It is an arithmetic number, because the mean of its divisors is an integer number (3508944).

Almost surely, 2^12866117 is an apocalyptic number.

It is an amenable number.

12866117 is a deficient number, since it is larger than the sum of its proper divisors (1169659).

12866117 is a wasteful number, since it uses less digits than its factorization.

12866117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169658.

The product of its digits is 4032, while the sum is 32.

The square root of 12866117 is about 3586.9369941497. The cubic root of 12866117 is about 234.3234927288.

The spelling of 12866117 in words is "twelve million, eight hundred sixty-six thousand, one hundred seventeen".