86685858 has 48 divisors (see below), whose sum is σ = 221584896. Its totient is φ = 23967360.

The previous prime is 86685829. The next prime is 86685871. The reversal of 86685858 is 85858668.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7191 + ... + 15002.

It is an arithmetic number, because the mean of its divisors is an integer number (4616352).

Almost surely, 2^86685858 is an apocalyptic number.

86685858 is an abundant number, since it is smaller than the sum of its proper divisors (134899038).

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

86685858 is a wasteful number, since it uses less digits than its factorization.

86685858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22239 (or 22236 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 54.

The square root of 86685858 is about 9310.5240454015. The cubic root of 86685858 is about 442.5707939975.

It can be divided in two parts, 8 and 6685858, that added together give a palindrome (6685866).

The spelling of 86685858 in words is "eighty-six million, six hundred eighty-five thousand, eight hundred fifty-eight".