86218 has 8 divisors (see below), whose sum is σ = 141120. Its totient is φ = 39180.

The previous prime is 86209. The next prime is 86239. The reversal of 86218 is 81268.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 86192 and 86201.

It is an unprimeable number.

86218 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 1938 + ... + 1981.

It is an arithmetic number, because the mean of its divisors is an integer number (17640).

2⁸⁶²¹⁸ is an apocalyptic number.

86218 is a deficient number, since it is larger than the sum of its proper divisors (54902).

86218 is a wasteful number, since it uses less digits than its factorization.

86218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932.

The product of its digits is 768, while the sum is 25.

The square root of 86218 is about 293.6290176396. The cubic root of 86218 is about 44.1773147856.

Subtracting from 86218 its reverse (81268), we obtain a triangular number (4950 = T₉₉).

It can be divided in two parts, 8 and 6218, that added together give a palindrome (6226).

The spelling of 86218 in words is "eighty-six thousand, two hundred eighteen".