86317487 has 4 divisors (see below), whose sum is σ = 87207456. Its totient is φ = 85427520.

The previous prime is 86317481. The next prime is 86317493. The reversal of 86317487 is 78471368.

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

It is an interprime number because it is at equal distance from previous prime (86317481) and next prime (86317493).

It is a cyclic number.

It is not a de Polignac number, because 86317487 - 2²² = 82123183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86317481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444839 + ... + 445032.

It is an arithmetic number, because the mean of its divisors is an integer number (21801864).

Almost surely, 2^86317487 is an apocalyptic number.

86317487 is a deficient number, since it is larger than the sum of its proper divisors (889969).

86317487 is an equidigital number, since it uses as much as digits as its factorization.

86317487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889968.

The product of its digits is 225792, while the sum is 44.

The square root of 86317487 is about 9290.7204779823. The cubic root of 86317487 is about 441.9430033041.

The spelling of 86317487 in words is "eighty-six million, three hundred seventeen thousand, four hundred eighty-seven".