86508580 has 24 divisors (see below), whose sum is σ = 192355128. Its totient is φ = 32567808.

The previous prime is 86508571. The next prime is 86508581. The reversal of 86508580 is 8580568.

It can be written as a sum of positive squares in 4 ways, for example, as 3771364 + 82737216 = 1942^2 + 9096^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (86508581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126879 + ... + 127558.

It is an arithmetic number, because the mean of its divisors is an integer number (8014797).

Almost surely, 2^86508580 is an apocalyptic number.

It is an amenable number.

86508580 is an abundant number, since it is smaller than the sum of its proper divisors (105846548).

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

86508580 is a wasteful number, since it uses less digits than its factorization.

86508580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254463 (or 254461 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 86508580 is about 9300.9988710891. The cubic root of 86508580 is about 442.2688931193.

The spelling of 86508580 in words is "eighty-six million, five hundred eight thousand, five hundred eighty".