166165323 has 8 divisors (see below), whose sum is σ = 221646336. Its totient is φ = 110730600.

The previous prime is 166165319. The next prime is 166165339. The reversal of 166165323 is 323561661.

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

It is not a de Polignac number, because 166165323 - 2² = 166165319 is a prime.

It is a super-2 number, since 2×166165323² = 55221829135388658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166165423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2083 + ... + 18348.

It is an arithmetic number, because the mean of its divisors is an integer number (27705792).

Almost surely, 2^166165323 is an apocalyptic number.

166165323 is a deficient number, since it is larger than the sum of its proper divisors (55481013).

166165323 is a wasteful number, since it uses less digits than its factorization.

166165323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23145.

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

The square root of 166165323 is about 12890.5129067854. The cubic root of 166165323 is about 549.7688538350.

The spelling of 166165323 in words is "one hundred sixty-six million, one hundred sixty-five thousand, three hundred twenty-three".