86817816 has 48 divisors (see below), whose sum is σ = 239578560. Its totient is φ = 28392000.

The previous prime is 86817791. The next prime is 86817839. The reversal of 86817816 is 61871868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7560 + ... + 15191.

It is an arithmetic number, because the mean of its divisors is an integer number (4991220).

Almost surely, 2^86817816 is an apocalyptic number.

It is an amenable number.

86817816 is an abundant number, since it is smaller than the sum of its proper divisors (152760744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86817816 is a wasteful number, since it uses less digits than its factorization.

86817816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22816 (or 22809 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 86817816 is about 9317.6078475111. The cubic root of 86817816 is about 442.7952487109.

The spelling of 86817816 in words is "eighty-six million, eight hundred seventeen thousand, eight hundred sixteen".