86858 has 8 divisors (see below), whose sum is σ = 131652. Its totient is φ = 42976.

The previous prime is 86857. The next prime is 86861. The reversal of 86858 is 85868.

It can be written as a sum of positive squares in 2 ways, for example, as 82369 + 4489 = 287^2 + 67^2 .

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

It is not an unprimeable number, because it can be changed into a prime (86851) 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, 116 + ... + 432.

2⁸⁶⁸⁵⁸ is an apocalyptic number.

86858 is a deficient number, since it is larger than the sum of its proper divisors (44794).

86858 is a wasteful number, since it uses less digits than its factorization.

86858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its digits is 15360, while the sum is 35.

The square root of 86858 is about 294.7168132292. The cubic root of 86858 is about 44.2863554736.

Subtracting from 86858 its reverse (85868), we obtain a triangular number (990 = T₄₄).

The spelling of 86858 in words is "eighty-six thousand, eight hundred fifty-eight".