165996236 has 24 divisors (see below), whose sum is σ = 349466880. Its totient is φ = 67396752.

The previous prime is 165996199. The next prime is 165996241. The reversal of 165996236 is 632699561.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155480 + ... + 156543.

It is an arithmetic number, because the mean of its divisors is an integer number (14561120).

Almost surely, 2^165996236 is an apocalyptic number.

It is an amenable number.

165996236 is an abundant number, since it is smaller than the sum of its proper divisors (183470644).

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

165996236 is a wasteful number, since it uses less digits than its factorization.

165996236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312053 (or 312051 counting only the distinct ones).

The product of its digits is 524880, while the sum is 47.

The square root of 165996236 is about 12883.9526543681. The cubic root of 165996236 is about 549.5823120756.

The spelling of 165996236 in words is "one hundred sixty-five million, nine hundred ninety-six thousand, two hundred thirty-six".