6668007739 has 2 divisors, whose sum is σ = 6668007740. Its totient is φ = 6668007738.

The previous prime is 6668007727. The next prime is 6668007743. The reversal of 6668007739 is 9377008666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6668007739 - 2¹⁷ = 6667876667 is a prime.

It is not a weakly prime, because it can be changed into another prime (6668007139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334003869 + 3334003870.

It is an arithmetic number, because the mean of its divisors is an integer number (3334003870).

Almost surely, 2^6668007739 is an apocalyptic number.

6668007739 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668007739 is an equidigital number, since it uses as much as digits as its factorization.

6668007739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The square root of 6668007739 is about 81657.8700371250. The cubic root of 6668007739 is about 1882.1982490392.

The spelling of 6668007739 in words is "six billion, six hundred sixty-eight million, seven thousand, seven hundred thirty-nine".