165663676 has 6 divisors (see below), whose sum is σ = 289911440. Its totient is φ = 82831836.

The previous prime is 165663653. The next prime is 165663683. The reversal of 165663676 is 676366561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20707956 + ... + 20707963.

Almost surely, 2^165663676 is an apocalyptic number.

It is an amenable number.

165663676 is a deficient number, since it is larger than the sum of its proper divisors (124247764).

165663676 is a wasteful number, since it uses less digits than its factorization.

165663676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41415923 (or 41415921 counting only the distinct ones).

The product of its digits is 816480, while the sum is 46.

The square root of 165663676 is about 12871.0402066033. The cubic root of 165663676 is about 549.2150521736.

The spelling of 165663676 in words is "one hundred sixty-five million, six hundred sixty-three thousand, six hundred seventy-six".