86638258 has 16 divisors (see below), whose sum is σ = 148740480. Its totient is φ = 37076256.

The previous prime is 86638241. The next prime is 86638261. The reversal of 86638258 is 85283668.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6238 + ... + 14566.

It is an arithmetic number, because the mean of its divisors is an integer number (9296280).

Almost surely, 2^86638258 is an apocalyptic number.

86638258 is a deficient number, since it is larger than the sum of its proper divisors (62102222).

86638258 is a wasteful number, since it uses less digits than its factorization.

86638258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9081.

The product of its digits is 552960, while the sum is 46.

The square root of 86638258 is about 9307.9674473002. The cubic root of 86638258 is about 442.4897726045.

The spelling of 86638258 in words is "eighty-six million, six hundred thirty-eight thousand, two hundred fifty-eight".