165363666 has 32 divisors (see below), whose sum is σ = 362214720. Its totient is φ = 50017344.

The previous prime is 165363659. The next prime is 165363677. The reversal of 165363666 is 666363561.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13365 + ... + 22568.

It is an arithmetic number, because the mean of its divisors is an integer number (11319210).

Almost surely, 2^165363666 is an apocalyptic number.

165363666 is an abundant number, since it is smaller than the sum of its proper divisors (196851054).

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

165363666 is a wasteful number, since it uses less digits than its factorization.

165363666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36010.

The product of its digits is 349920, while the sum is 42.

The square root of 165363666 is about 12859.3804671920. The cubic root of 165363666 is about 548.8833166642.

It can be divided in two parts, 16536 and 3666, that added together give a palindrome (20202).

The spelling of 165363666 in words is "one hundred sixty-five million, three hundred sixty-three thousand, six hundred sixty-six".