165590996 has 12 divisors (see below), whose sum is σ = 289880052. Its totient is φ = 82768128.

The previous prime is 165590989. The next prime is 165591029. The reversal of 165590996 is 699095561.

It can be written as a sum of positive squares in 2 ways, for example, as 1392400 + 164198596 = 1180^2 + 12814^2 .

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, 13466 + ... + 22638.

It is an arithmetic number, because the mean of its divisors is an integer number (24156671).

Almost surely, 2^165590996 is an apocalyptic number.

It is an amenable number.

165590996 is a deficient number, since it is larger than the sum of its proper divisors (124289056).

165590996 is a wasteful number, since it uses less digits than its factorization.

165590996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13690 (or 13688 counting only the distinct ones).

The product of its (nonzero) digits is 656100, while the sum is 50.

The square root of 165590996 is about 12868.2165042402. The cubic root of 165590996 is about 549.1347231805.

The spelling of 165590996 in words is "one hundred sixty-five million, five hundred ninety thousand, nine hundred ninety-six".