8613324865 has 16 divisors (see below), whose sum is σ = 10402386768. Its totient is φ = 6846447616.

The previous prime is 8613324799. The next prime is 8613324869. The reversal of 8613324865 is 5684233168.

It is a Cunningham number, because it is equal to 92808²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 42823936 + 8570500929 = 6544^2 + 92577^2 .

It is a cyclic number.

It is not a de Polignac number, because 8613324865 - 2⁹ = 8613324353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8613324869) 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 in 15 ways as a sum of consecutive naturals, for example, 2379537 + ... + 2383153.

It is an arithmetic number, because the mean of its divisors is an integer number (650149173).

Almost surely, 2^8613324865 is an apocalyptic number.

It is an amenable number.

8613324865 is a deficient number, since it is larger than the sum of its proper divisors (1789061903).

8613324865 is a wasteful number, since it uses less digits than its factorization.

8613324865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6548.

The product of its digits is 829440, while the sum is 46.

The square root of 8613324865 is about 92808.0000053875. Note that the first 5 decimals coincide. The cubic root of 8613324865 is about 2049.8572071867.

The spelling of 8613324865 in words is "eight billion, six hundred thirteen million, three hundred twenty-four thousand, eight hundred sixty-five".