165975924 has 24 divisors (see below), whose sum is σ = 391272448. Its totient is φ = 54754560.

The previous prime is 165975923. The next prime is 165975949. The reversal of 165975924 is 429579561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165975923) 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, 70132 + ... + 72459.

Almost surely, 2^165975924 is an apocalyptic number.

It is an amenable number.

165975924 is an abundant number, since it is smaller than the sum of its proper divisors (225296524).

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

165975924 is a wasteful number, since it uses less digits than its factorization.

165975924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142695 (or 142693 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The square root of 165975924 is about 12883.1643628419. The cubic root of 165975924 is about 549.5598947575.

The spelling of 165975924 in words is "one hundred sixty-five million, nine hundred seventy-five thousand, nine hundred twenty-four".