86512885 has 4 divisors (see below), whose sum is σ = 103815468. Its totient is φ = 69210304.

The previous prime is 86512873. The next prime is 86512891. The reversal of 86512885 is 58821568.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39425841 + 47087044 = 6279^2 + 6862^2 .

It is a cyclic number.

It is not a de Polignac number, because 86512885 - 2²¹ = 84415733 is a prime.

It is a Duffinian number.

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, 8651284 + ... + 8651293.

It is an arithmetic number, because the mean of its divisors is an integer number (25953867).

Almost surely, 2^86512885 is an apocalyptic number.

It is an amenable number.

86512885 is a deficient number, since it is larger than the sum of its proper divisors (17302583).

86512885 is a wasteful number, since it uses less digits than its factorization.

86512885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17302582.

The product of its digits is 153600, while the sum is 43.

The square root of 86512885 is about 9301.2302949664. The cubic root of 86512885 is about 442.2762293319.

The spelling of 86512885 in words is "eighty-six million, five hundred twelve thousand, eight hundred eighty-five".