86539 has 2 divisors, whose sum is σ = 86540. Its totient is φ = 86538.

The previous prime is 86533. The next prime is 86561. The reversal of 86539 is 93568.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86539 - 2³ = 86531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86539.

It is not a weakly prime, because it can be changed into another prime (86531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43269 + 43270.

It is an arithmetic number, because the mean of its divisors is an integer number (43270).

2⁸⁶⁵³⁹ is an apocalyptic number.

86539 is a deficient number, since it is larger than the sum of its proper divisors (1).

86539 is an equidigital number, since it uses as much as digits as its factorization.

86539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 86539 is about 294.1751179145. The cubic root of 86539 is about 44.2320727065.

It can be divided in two parts, 8653 and 9, that multiplied together give a palindrome (77877).

The spelling of 86539 in words is "eighty-six thousand, five hundred thirty-nine".