165503996 has 12 divisors (see below), whose sum is σ = 331008048. Its totient is φ = 70930272.

The previous prime is 165503977. The next prime is 165504023. The reversal of 165503996 is 699305561.

165503996 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2955401 + ... + 2955456.

It is an arithmetic number, because the mean of its divisors is an integer number (27584004).

Almost surely, 2^165503996 is an apocalyptic number.

It is an amenable number.

165503996 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

165503996 is a wasteful number, since it uses less digits than its factorization.

165503996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5910868 (or 5910866 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 44.

The square root of 165503996 is about 12864.8356382816. The cubic root of 165503996 is about 549.0385362071.

The spelling of 165503996 in words is "one hundred sixty-five million, five hundred three thousand, nine hundred ninety-six".