8664560593 has 4 divisors (see below), whose sum is σ = 9331065268. Its totient is φ = 7998055920.

The previous prime is 8664560573. The next prime is 8664560609. The reversal of 8664560593 is 3950654668.

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 5765061184 + 2899499409 = 75928^2 + 53847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8664560593 is a prime.

It is a super-2 number, since 2×8664560593² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8664560593.

It is not an unprimeable number, because it can be changed into a prime (8664560563) 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, 333252318 + ... + 333252343.

It is an arithmetic number, because the mean of its divisors is an integer number (2332766317).

Almost surely, 2^8664560593 is an apocalyptic number.

It is an amenable number.

8664560593 is a deficient number, since it is larger than the sum of its proper divisors (666504675).

8664560593 is a wasteful number, since it uses less digits than its factorization.

8664560593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666504674.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The square root of 8664560593 is about 93083.6215077604. The cubic root of 8664560593 is about 2053.9136494662.

The spelling of 8664560593 in words is "eight billion, six hundred sixty-four million, five hundred sixty thousand, five hundred ninety-three".