12566165 has 16 divisors (see below), whose sum is σ = 15890688. Its totient is φ = 9520896.

The previous prime is 12566161. The next prime is 12566167. The reversal of 12566165 is 56166521.

It is not a de Polignac number, because 12566165 - 2² = 12566161 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 (12566161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12512 + ... + 13478.

It is an arithmetic number, because the mean of its divisors is an integer number (993168).

Almost surely, 2^12566165 is an apocalyptic number.

It is an amenable number.

12566165 is a deficient number, since it is larger than the sum of its proper divisors (3324523).

12566165 is a wasteful number, since it uses less digits than its factorization.

12566165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108.

The product of its digits is 10800, while the sum is 32.

The square root of 12566165 is about 3544.8787003225. The cubic root of 12566165 is about 232.4882022765.

The spelling of 12566165 in words is "twelve million, five hundred sixty-six thousand, one hundred sixty-five".