86593813 has 2 divisors, whose sum is σ = 86593814. Its totient is φ = 86593812.

The previous prime is 86593789. The next prime is 86593877. The reversal of 86593813 is 31839568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85988529 + 605284 = 9273^2 + 778^2 .

It is a cyclic number.

It is not a de Polignac number, because 86593813 - 2¹³ = 86585621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86593813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86593613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43296906 + 43296907.

It is an arithmetic number, because the mean of its divisors is an integer number (43296907).

Almost surely, 2^86593813 is an apocalyptic number.

It is an amenable number.

86593813 is a deficient number, since it is larger than the sum of its proper divisors (1).

86593813 is an equidigital number, since it uses as much as digits as its factorization.

86593813 is an odious number, because the sum of its binary digits is odd.

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

The square root of 86593813 is about 9305.5796702838. The cubic root of 86593813 is about 442.4140946370.

The spelling of 86593813 in words is "eighty-six million, five hundred ninety-three thousand, eight hundred thirteen".