12687165 has 16 divisors (see below), whose sum is σ = 22555200. Its totient is φ = 6766416.

The previous prime is 12687149. The next prime is 12687179. The reversal of 12687165 is 56178621.

It is not a de Polignac number, because 12687165 - 2⁴ = 12687149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46855 + ... + 47124.

It is an arithmetic number, because the mean of its divisors is an integer number (1409700).

Almost surely, 2^12687165 is an apocalyptic number.

12687165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12687165 is a deficient number, since it is larger than the sum of its proper divisors (9868035).

12687165 is an equidigital number, since it uses as much as digits as its factorization.

12687165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93993 (or 93987 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 12687165 is about 3561.9046871021. The cubic root of 12687165 is about 233.2320319902.

The spelling of 12687165 in words is "twelve million, six hundred eighty-seven thousand, one hundred sixty-five".