86718570 has 16 divisors (see below), whose sum is σ = 208124640. Its totient is φ = 23124944.

The previous prime is 86718557. The next prime is 86718571. The reversal of 86718570 is 7581768.

It is a super-2 number, since 2×86718570² = 15040220765689800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86718571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1445280 + ... + 1445339.

It is an arithmetic number, because the mean of its divisors is an integer number (13007790).

Almost surely, 2^86718570 is an apocalyptic number.

86718570 is an abundant number, since it is smaller than the sum of its proper divisors (121406070).

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

86718570 is a wasteful number, since it uses less digits than its factorization.

86718570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890629.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 86718570 is about 9312.2806014424. The cubic root of 86718570 is about 442.6264568836.

The spelling of 86718570 in words is "eighty-six million, seven hundred eighteen thousand, five hundred seventy".