12166685 has 8 divisors (see below), whose sum is σ = 14847840. Its totient is φ = 9568144.

The previous prime is 12166681. The next prime is 12166697. The reversal of 12166685 is 58666121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12166685 - 2² = 12166681 is a prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12166681) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20327 + ... + 20916.

It is an arithmetic number, because the mean of its divisors is an integer number (1855980).

Almost surely, 2^12166685 is an apocalyptic number.

It is an amenable number.

12166685 is a deficient number, since it is larger than the sum of its proper divisors (2681155).

12166685 is an equidigital number, since it uses as much as digits as its factorization.

12166685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41307.

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

The square root of 12166685 is about 3488.0775507434. The cubic root of 12166685 is about 229.9980151057.

The spelling of 12166685 in words is "twelve million, one hundred sixty-six thousand, six hundred eighty-five".