86318593 has 4 divisors (see below), whose sum is σ = 87781680. Its totient is φ = 84855508.

The previous prime is 86318581. The next prime is 86318611. The reversal of 86318593 is 39581368.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86318593 - 2¹³ = 86310401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86318693) 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, 731455 + ... + 731572.

It is an arithmetic number, because the mean of its divisors is an integer number (21945420).

Almost surely, 2^86318593 is an apocalyptic number.

It is an amenable number.

86318593 is a deficient number, since it is larger than the sum of its proper divisors (1463087).

86318593 is a wasteful number, since it uses less digits than its factorization.

86318593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463086.

The product of its digits is 155520, while the sum is 43.

The square root of 86318593 is about 9290.7799995479. The cubic root of 86318593 is about 441.9448908586.

The spelling of 86318593 in words is "eighty-six million, three hundred eighteen thousand, five hundred ninety-three".