2564697683 has 2 divisors, whose sum is σ = 2564697684. Its totient is φ = 2564697682.

The previous prime is 2564697649. The next prime is 2564697701. The reversal of 2564697683 is 3867964652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2564697683 - 2¹⁸ = 2564435539 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2564667683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282348841 + 1282348842.

It is an arithmetic number, because the mean of its divisors is an integer number (1282348842).

Almost surely, 2^2564697683 is an apocalyptic number.

2564697683 is a deficient number, since it is larger than the sum of its proper divisors (1).

2564697683 is an equidigital number, since it uses as much as digits as its factorization.

2564697683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13063680, while the sum is 56.

The square root of 2564697683 is about 50642.8443415257. The cubic root of 2564697683 is about 1368.8170090475.

The spelling of 2564697683 in words is "two billion, five hundred sixty-four million, six hundred ninety-seven thousand, six hundred eighty-three".