86581208 has 16 divisors (see below), whose sum is σ = 185531280. Its totient is φ = 37106208.

The previous prime is 86581193. The next prime is 86581213. The reversal of 86581208 is 80218568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772991 + ... + 773102.

It is an arithmetic number, because the mean of its divisors is an integer number (11595705).

Almost surely, 2^86581208 is an apocalyptic number.

It is an amenable number.

86581208 is an abundant number, since it is smaller than the sum of its proper divisors (98950072).

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

86581208 is a wasteful number, since it uses less digits than its factorization.

86581208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546106 (or 1546102 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 86581208 is about 9304.9023638080. The cubic root of 86581208 is about 442.3926269744.

The spelling of 86581208 in words is "eighty-six million, five hundred eighty-one thousand, two hundred eight".