165326868 has 72 divisors (see below), whose sum is σ = 479390912. Its totient is φ = 47060352.

The previous prime is 165326849. The next prime is 165326879. The reversal of 165326868 is 868623561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76296 + ... + 78432.

Almost surely, 2^165326868 is an apocalyptic number.

165326868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165326868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239695456).

165326868 is an abundant number, since it is smaller than the sum of its proper divisors (314064044).

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

165326868 is a wasteful number, since it uses less digits than its factorization.

165326868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461 (or 2456 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 165326868 is about 12857.9496032610. The cubic root of 165326868 is about 548.8425997256.

The spelling of 165326868 in words is "one hundred sixty-five million, three hundred twenty-six thousand, eight hundred sixty-eight".