6664326289 has 2 divisors, whose sum is σ = 6664326290. Its totient is φ = 6664326288.

The previous prime is 6664326271. The next prime is 6664326301. The reversal of 6664326289 is 9826234666.

6664326289 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5969107600 + 695218689 = 77260^2 + 26367^2 .

It is a cyclic number.

It is not a de Polignac number, because 6664326289 - 2⁵ = 6664326257 is a prime.

It is not a weakly prime, because it can be changed into another prime (6664326239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332163144 + 3332163145.

It is an arithmetic number, because the mean of its divisors is an integer number (3332163145).

Almost surely, 2^6664326289 is an apocalyptic number.

It is an amenable number.

6664326289 is a deficient number, since it is larger than the sum of its proper divisors (1).

6664326289 is an equidigital number, since it uses as much as digits as its factorization.

6664326289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 52.

The square root of 6664326289 is about 81635.3250070091. The cubic root of 6664326289 is about 1881.8517940145.

The spelling of 6664326289 in words is "six billion, six hundred sixty-four million, three hundred twenty-six thousand, two hundred eighty-nine".