165495564 has 72 divisors (see below), whose sum is σ = 453034400. Its totient is φ = 50637312.

The previous prime is 165495553. The next prime is 165495569. The reversal of 165495564 is 465594561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165495569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92244 + ... + 94020.

Almost surely, 2^165495564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165495564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226517200).

165495564 is an abundant number, since it is smaller than the sum of its proper divisors (287538836).

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

165495564 is a wasteful number, since it uses less digits than its factorization.

165495564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999 (or 1994 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 165495564 is about 12864.5079190772. The cubic root of 165495564 is about 549.0292120182.

The spelling of 165495564 in words is "one hundred sixty-five million, four hundred ninety-five thousand, five hundred sixty-four".