2564728807 has 2 divisors, whose sum is σ = 2564728808. Its totient is φ = 2564728806.

The previous prime is 2564728799. The next prime is 2564728841. The reversal of 2564728807 is 7088274652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2564728807 - 2³ = 2564728799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2564728877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282364403 + 1282364404.

It is an arithmetic number, because the mean of its divisors is an integer number (1282364404).

Almost surely, 2^2564728807 is an apocalyptic number.

2564728807 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564728807 is an equidigital number, since it uses as much as digits as its factorization.

2564728807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The square root of 2564728807 is about 50643.1516298107. The cubic root of 2564728807 is about 1368.8225461378.

The spelling of 2564728807 in words is "two billion, five hundred sixty-four million, seven hundred twenty-eight thousand, eight hundred seven".