166323165 has 16 divisors (see below), whose sum is σ = 266481600. Its totient is φ = 88584192.

The previous prime is 166323161. The next prime is 166323167. The reversal of 166323165 is 561323661.

It is not a de Polignac number, because 166323165 - 2² = 166323161 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166323161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4326 + ... + 18744.

It is an arithmetic number, because the mean of its divisors is an integer number (16655100).

Almost surely, 2^166323165 is an apocalyptic number.

166323165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166323165 is a deficient number, since it is larger than the sum of its proper divisors (100158435).

166323165 is a wasteful number, since it uses less digits than its factorization.

166323165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15196.

The product of its digits is 19440, while the sum is 33.

The square root of 166323165 is about 12896.6338631443. The cubic root of 166323165 is about 549.9428756098.

The spelling of 166323165 in words is "one hundred sixty-six million, three hundred twenty-three thousand, one hundred sixty-five".