2564863297 has 4 divisors (see below), whose sum is σ = 2565051840. Its totient is φ = 2564674756.

The previous prime is 2564863283. The next prime is 2564863307. The reversal of 2564863297 is 7923684652.

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 2564863297 - 2²³ = 2556474689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2564863597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72133 + ... + 101650.

It is an arithmetic number, because the mean of its divisors is an integer number (641262960).

Almost surely, 2^2564863297 is an apocalyptic number.

It is an amenable number.

2564863297 is a deficient number, since it is larger than the sum of its proper divisors (188543).

2564863297 is a wasteful number, since it uses less digits than its factorization.

2564863297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188542.

The product of its digits is 4354560, while the sum is 52.

The square root of 2564863297 is about 50644.4794326094. The cubic root of 2564863297 is about 1368.8464719588.

The spelling of 2564863297 in words is "two billion, five hundred sixty-four million, eight hundred sixty-three thousand, two hundred ninety-seven".