165165768 has 48 divisors (see below), whose sum is σ = 461760000. Its totient is φ = 53278560.

The previous prime is 165165739. The next prime is 165165773. The reversal of 165165768 is 867561561.

165165768 is a `hidden beast` number, since 1 + 65 + 16 + 576 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 34768 + ... + 39231.

It is an arithmetic number, because the mean of its divisors is an integer number (9620000).

Almost surely, 2^165165768 is an apocalyptic number.

165165768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

165165768 is an abundant number, since it is smaller than the sum of its proper divisors (296594232).

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

165165768 is a wasteful number, since it uses less digits than its factorization.

165165768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74042 (or 74035 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 165165768 is about 12851.6834694915. The cubic root of 165165768 is about 548.6642716278.

The spelling of 165165768 in words is "one hundred sixty-five million, one hundred sixty-five thousand, seven hundred sixty-eight".