165906964 has 12 divisors (see below), whose sum is σ = 298184404. Its totient is φ = 80711424.

The previous prime is 165906929. The next prime is 165906967. The reversal of 165906964 is 469609561.

It can be written as a sum of positive squares in 2 ways, for example, as 118984464 + 46922500 = 10908^2 + 6850^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165906967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560349 + ... + 560644.

Almost surely, 2^165906964 is an apocalyptic number.

It is an amenable number.

165906964 is a deficient number, since it is larger than the sum of its proper divisors (132277440).

165906964 is a wasteful number, since it uses less digits than its factorization.

165906964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121034 (or 1121032 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 165906964 is about 12880.4877236850. The cubic root of 165906964 is about 549.4837734759.

The spelling of 165906964 in words is "one hundred sixty-five million, nine hundred six thousand, nine hundred sixty-four".