6456964565 has 16 divisors (see below), whose sum is σ = 8288732592. Its totient is φ = 4811587584.

The previous prime is 6456964489. The next prime is 6456964567. The reversal of 6456964565 is 5654696546.

It can be written as a sum of positive squares in 8 ways, for example, as 968080996 + 5488883569 = 31114^2 + 74087^2 .

It is a cyclic number.

It is not a de Polignac number, because 6456964565 - 2⁸ = 6456964309 is a prime.

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 6456964565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6456964567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383324 + ... + 399813.

It is an arithmetic number, because the mean of its divisors is an integer number (518045787).

Almost surely, 2^6456964565 is an apocalyptic number.

It is an amenable number.

6456964565 is a deficient number, since it is larger than the sum of its proper divisors (1831768027).

6456964565 is a wasteful number, since it uses less digits than its factorization.

6456964565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783256.

The product of its digits is 23328000, while the sum is 56.

The square root of 6456964565 is about 80355.2398104816. The cubic root of 6456964565 is about 1862.1277308913.

The spelling of 6456964565 in words is "six billion, four hundred fifty-six million, nine hundred sixty-four thousand, five hundred sixty-five".