168539 has 4 divisors (see below), whose sum is σ = 192624. Its totient is φ = 144456.

The previous prime is 168533. The next prime is 168541. The reversal of 168539 is 935861.

168539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 168539 - 2⁴ = 168523 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 (168533) 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, 12032 + ... + 12045.

It is an arithmetic number, because the mean of its divisors is an integer number (48156).

2¹⁶⁸⁵³⁹ is an apocalyptic number.

168539 is a deficient number, since it is larger than the sum of its proper divisors (24085).

168539 is an equidigital number, since it uses as much as digits as its factorization.

168539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24084.

The product of its digits is 6480, while the sum is 32.

The square root of 168539 is about 410.5350167769. The cubic root of 168539 is about 55.2374308543.

It can be divided in two parts, 168 and 539, that added together give a palindrome (707).

The spelling of 168539 in words is "one hundred sixty-eight thousand, five hundred thirty-nine".