86868684 has 72 divisors (see below), whose sum is σ = 264176640. Its totient is φ = 23512032.

The previous prime is 86868679. The next prime is 86868689. The reversal of 86868684 is 48686868.

It is an interprime number because it is at equal distance from previous prime (86868679) and next prime (86868689).

It is a self number, because there is not a number n which added to its sum of digits gives 86868684.

It is not an unprimeable number, because it can be changed into a prime (86868689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4284 + ... + 13859.

It is an arithmetic number, because the mean of its divisors is an integer number (3669120).

Almost surely, 2^86868684 is an apocalyptic number.

86868684 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

86868684 is an abundant number, since it is smaller than the sum of its proper divisors (177307956).

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

86868684 is a wasteful number, since it uses less digits than its factorization.

86868684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18179 (or 18174 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 54.

The square root of 86868684 is about 9320.3371183665. The cubic root of 86868684 is about 442.8817121892.

The spelling of 86868684 in words is "eighty-six million, eight hundred sixty-eight thousand, six hundred eighty-four".