8564765613 has 4 divisors (see below), whose sum is σ = 11419687488. Its totient is φ = 5709843740.

The previous prime is 8564765611. The next prime is 8564765623. The reversal of 8564765613 is 3165674658.

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 8564765613 - 2¹ = 8564765611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8564765611) 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, 1427460933 + ... + 1427460938.

It is an arithmetic number, because the mean of its divisors is an integer number (2854921872).

Almost surely, 2^8564765613 is an apocalyptic number.

It is an amenable number.

8564765613 is a deficient number, since it is larger than the sum of its proper divisors (2854921875).

8564765613 is a wasteful number, since it uses less digits than its factorization.

8564765613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854921874.

The product of its digits is 3628800, while the sum is 51.

The square root of 8564765613 is about 92546.0188933052. The cubic root of 8564765613 is about 2045.9977924620.

The spelling of 8564765613 in words is "eight billion, five hundred sixty-four million, seven hundred sixty-five thousand, six hundred thirteen".