86685678 has 24 divisors (see below), whose sum is σ = 192188568. Its totient is φ = 28222992.

The previous prime is 86685661. The next prime is 86685751. The reversal of 86685678 is 87658668.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55225 + ... + 56772.

It is an arithmetic number, because the mean of its divisors is an integer number (8007857).

Almost surely, 2^86685678 is an apocalyptic number.

86685678 is an abundant number, since it is smaller than the sum of its proper divisors (105502890).

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

86685678 is a wasteful number, since it uses less digits than its factorization.

86685678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112048 (or 112045 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 86685678 is about 9310.5143789159. The cubic root of 86685678 is about 442.5704876699.

The spelling of 86685678 in words is "eighty-six million, six hundred eighty-five thousand, six hundred seventy-eight".