6568548949 has 2 divisors, whose sum is σ = 6568548950. Its totient is φ = 6568548948.

The previous prime is 6568548937. The next prime is 6568549003. The reversal of 6568548949 is 9498458656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3295908100 + 3272640849 = 57410^2 + 57207^2 .

It is a cyclic number.

It is not a de Polignac number, because 6568548949 - 2²⁷ = 6434331221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6568548149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3284274474 + 3284274475.

It is an arithmetic number, because the mean of its divisors is an integer number (3284274475).

Almost surely, 2^6568548949 is an apocalyptic number.

It is an amenable number.

6568548949 is a deficient number, since it is larger than the sum of its proper divisors (1).

6568548949 is an equidigital number, since it uses as much as digits as its factorization.

6568548949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74649600, while the sum is 64.

The square root of 6568548949 is about 81046.5850545228. The cubic root of 6568548949 is about 1872.7931558012.

The spelling of 6568548949 in words is "six billion, five hundred sixty-eight million, five hundred forty-eight thousand, nine hundred forty-nine".