165099924 has 96 divisors (see below), whose sum is σ = 482119680. Its totient is φ = 48405600.

The previous prime is 165099899. The next prime is 165099943. The reversal of 165099924 is 429990561.

It is a self number, because there is not a number n which added to its sum of digits gives 165099924.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34587 + ... + 39069.

It is an arithmetic number, because the mean of its divisors is an integer number (5022080).

Almost surely, 2^165099924 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 165099924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241059840).

165099924 is an abundant number, since it is smaller than the sum of its proper divisors (317019756).

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

165099924 is a wasteful number, since it uses less digits than its factorization.

165099924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4538 (or 4530 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 165099924 is about 12849.1215263924. The cubic root of 165099924 is about 548.5913528617.

The spelling of 165099924 in words is "one hundred sixty-five million, ninety-nine thousand, nine hundred twenty-four".