5640866563 has 2 divisors, whose sum is σ = 5640866564. Its totient is φ = 5640866562.

The previous prime is 5640866507. The next prime is 5640866573. The reversal of 5640866563 is 3656680465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5640866563 - 2²⁵ = 5607312131 is a prime.

It is not a weakly prime, because it can be changed into another prime (5640866573) 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 as a sum of consecutive naturals, namely, 2820433281 + 2820433282.

It is an arithmetic number, because the mean of its divisors is an integer number (2820433282).

Almost surely, 2^5640866563 is an apocalyptic number.

5640866563 is a deficient number, since it is larger than the sum of its proper divisors (1).

5640866563 is an equidigital number, since it uses as much as digits as its factorization.

5640866563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The square root of 5640866563 is about 75105.7025997361. The cubic root of 5640866563 is about 1780.1172505140.

The spelling of 5640866563 in words is "five billion, six hundred forty million, eight hundred sixty-six thousand, five hundred sixty-three".