165664175 has 12 divisors (see below), whose sum is σ = 205600680. Its totient is φ = 132417120.

The previous prime is 165664171. The next prime is 165664181. The reversal of 165664175 is 571466561.

It is not a de Polignac number, because 165664175 - 2² = 165664171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165664171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38429 + ... + 42521.

It is an arithmetic number, because the mean of its divisors is an integer number (17133390).

Almost surely, 2^165664175 is an apocalyptic number.

165664175 is a deficient number, since it is larger than the sum of its proper divisors (39936505).

165664175 is a wasteful number, since it uses less digits than its factorization.

165664175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722 (or 5717 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 165664175 is about 12871.0595911914. The cubic root of 165664175 is about 549.2156036082.

The spelling of 165664175 in words is "one hundred sixty-five million, six hundred sixty-four thousand, one hundred seventy-five".