86117818 has 16 divisors (see below), whose sum is σ = 139688064. Its totient is φ = 39663040.

The previous prime is 86117807. The next prime is 86117839. The reversal of 86117818 is 81871168.

It is a happy number.

It is a super-2 number, since 2×86117818² = 14832557154162248, which contains 22 as substring.

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, 25348 + ... + 28543.

It is an arithmetic number, because the mean of its divisors is an integer number (8730504).

Almost surely, 2^86117818 is an apocalyptic number.

86117818 is a deficient number, since it is larger than the sum of its proper divisors (53570246).

86117818 is a wasteful number, since it uses less digits than its factorization.

86117818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53957.

The product of its digits is 21504, while the sum is 40.

The square root of 86117818 is about 9279.9686421884. The cubic root of 86117818 is about 441.6019737373.

The spelling of 86117818 in words is "eighty-six million, one hundred seventeen thousand, eight hundred eighteen".