86213 has 4 divisors (see below), whose sum is σ = 87468. Its totient is φ = 84960.

The previous prime is 86209. The next prime is 86239. The reversal of 86213 is 31268.

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

It can be written as a sum of positive squares in 2 ways, for example, as 66049 + 20164 = 257^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 86213 - 2² = 86209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86243) 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 in 3 ways as a sum of consecutive naturals, for example, 518 + ... + 663.

It is an arithmetic number, because the mean of its divisors is an integer number (21867).

2⁸⁶²¹³ is an apocalyptic number.

It is an amenable number.

86213 is a deficient number, since it is larger than the sum of its proper divisors (1255).

86213 is a wasteful number, since it uses less digits than its factorization.

86213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254.

The product of its digits is 288, while the sum is 20.

The square root of 86213 is about 293.6205033713. The cubic root of 86213 is about 44.1764607843.

Subtracting from 86213 its reverse (31268), we obtain a palindrome (54945).

The spelling of 86213 in words is "eighty-six thousand, two hundred thirteen".