165699927 has 12 divisors (see below), whose sum is σ = 240420544. Its totient is φ = 109969920.

The previous prime is 165699913. The next prime is 165699953. The reversal of 165699927 is 729996561.

It is not a de Polignac number, because 165699927 - 2¹⁴ = 165683543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165699977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39274 + ... + 43287.

Almost surely, 2^165699927 is an apocalyptic number.

165699927 is a deficient number, since it is larger than the sum of its proper divisors (74720617).

165699927 is a wasteful number, since it uses less digits than its factorization.

165699927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82790 (or 82787 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 165699927 is about 12872.4483685117. The cubic root of 165699927 is about 549.2551095221.

The spelling of 165699927 in words is "one hundred sixty-five million, six hundred ninety-nine thousand, nine hundred twenty-seven".