165992660 has 24 divisors (see below), whose sum is σ = 349332480. Its totient is φ = 66254624.

The previous prime is 165992657. The next prime is 165992669. The reversal of 165992660 is 66299561.

165992660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165992669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917 + ... + 18243.

It is an arithmetic number, because the mean of its divisors is an integer number (14555520).

Almost surely, 2^165992660 is an apocalyptic number.

165992660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165992660 is an abundant number, since it is smaller than the sum of its proper divisors (183339820).

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

165992660 is a wasteful number, since it uses less digits than its factorization.

165992660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17815 (or 17813 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 165992660 is about 12883.8138763334. The cubic root of 165992660 is about 549.5783655595.

The spelling of 165992660 in words is "one hundred sixty-five million, nine hundred ninety-two thousand, six hundred sixty".