165165712 has 40 divisors (see below), whose sum is σ = 332400600. Its totient is φ = 79441920.

The previous prime is 165165631. The next prime is 165165713. The reversal of 165165712 is 217561561.

It can be written as a sum of positive squares in 4 ways, for example, as 7311616 + 157854096 = 2704^2 + 12564^2 .

It is not an unprimeable number, because it can be changed into a prime (165165713) 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, 46164 + ... + 49612.

It is an arithmetic number, because the mean of its divisors is an integer number (8310015).

Almost surely, 2^165165712 is an apocalyptic number.

It is an amenable number.

165165712 is an abundant number, since it is smaller than the sum of its proper divisors (167234888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165165712 is a wasteful number, since it uses less digits than its factorization.

165165712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571 (or 3565 counting only the distinct ones).

The product of its digits is 12600, while the sum is 34.

The square root of 165165712 is about 12851.6812907884. The cubic root of 165165712 is about 548.6642096189.

The spelling of 165165712 in words is "one hundred sixty-five million, one hundred sixty-five thousand, seven hundred twelve".