86686660 has 24 divisors (see below), whose sum is σ = 183165696. Its totient is φ = 34460640.

The previous prime is 86686651. The next prime is 86686661. The reversal of 86686660 is 6668668.

It is a self number, because there is not a number n which added to its sum of digits gives 86686660.

It is not an unprimeable number, because it can be changed into a prime (86686661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10036 + ... + 16555.

It is an arithmetic number, because the mean of its divisors is an integer number (7631904).

Almost surely, 2^86686660 is an apocalyptic number.

It is an amenable number.

86686660 is an abundant number, since it is smaller than the sum of its proper divisors (96479036).

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

86686660 is a wasteful number, since it uses less digits than its factorization.

86686660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26763 (or 26761 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 86686660 is about 9310.5671148432. The cubic root of 86686660 is about 442.5721588517.

The spelling of 86686660 in words is "eighty-six million, six hundred eighty-six thousand, six hundred sixty".