165655339 has 4 divisors (see below), whose sum is σ = 167363224. Its totient is φ = 163947456.

The previous prime is 165655313. The next prime is 165655349. The reversal of 165655339 is 933556561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165655339 - 2¹⁵ = 165622571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165655295 and 165655304.

It is not an unprimeable number, because it can be changed into a prime (165655309) 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, 853797 + ... + 853990.

It is an arithmetic number, because the mean of its divisors is an integer number (41840806).

Almost surely, 2^165655339 is an apocalyptic number.

165655339 is a deficient number, since it is larger than the sum of its proper divisors (1707885).

165655339 is an equidigital number, since it uses as much as digits as its factorization.

165655339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707884.

The product of its digits is 364500, while the sum is 43.

The square root of 165655339 is about 12870.7163359310. The cubic root of 165655339 is about 549.2058389636.

It can be divided in two parts, 16565 and 5339, that added together give a square (21904 = 148²).

The spelling of 165655339 in words is "one hundred sixty-five million, six hundred fifty-five thousand, three hundred thirty-nine".