165173066 has 8 divisors (see below), whose sum is σ = 250165344. Its totient is φ = 81784620.

The previous prime is 165173059. The next prime is 165173081. The reversal of 165173066 is 660371561.

It is a happy number.

165173066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400700 + ... + 401111.

It is an arithmetic number, because the mean of its divisors is an integer number (31270668).

Almost surely, 2^165173066 is an apocalyptic number.

165173066 is a deficient number, since it is larger than the sum of its proper divisors (84992278).

165173066 is a wasteful number, since it uses less digits than its factorization.

165173066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801916.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 165173066 is about 12851.9673980290. The cubic root of 165173066 is about 548.6723525857.

The spelling of 165173066 in words is "one hundred sixty-five million, one hundred seventy-three thousand, sixty-six".