6568047979 has 2 divisors, whose sum is σ = 6568047980. Its totient is φ = 6568047978.

The previous prime is 6568047917. The next prime is 6568048009. The reversal of 6568047979 is 9797408656.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6568047979 is a prime.

It is not a weakly prime, because it can be changed into another prime (6568047379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3284023989 + 3284023990.

It is an arithmetic number, because the mean of its divisors is an integer number (3284023990).

Almost surely, 2^6568047979 is an apocalyptic number.

6568047979 is a deficient number, since it is larger than the sum of its proper divisors (1).

6568047979 is an equidigital number, since it uses as much as digits as its factorization.

6568047979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22861440, while the sum is 61.

The square root of 6568047979 is about 81043.4943656800. The cubic root of 6568047979 is about 1872.7455432032.

The spelling of 6568047979 in words is "six billion, five hundred sixty-eight million, forty-seven thousand, nine hundred seventy-nine".