6668889023 has 2 divisors, whose sum is σ = 6668889024. Its totient is φ = 6668889022.

The previous prime is 6668888881. The next prime is 6668889053. The reversal of 6668889023 is 3209888666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6668889023 - 2²⁸ = 6400453567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6668889023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6668889053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334444511 + 3334444512.

It is an arithmetic number, because the mean of its divisors is an integer number (3334444512).

Almost surely, 2^6668889023 is an apocalyptic number.

6668889023 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668889023 is an equidigital number, since it uses as much as digits as its factorization.

6668889023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5971968, while the sum is 56.

The square root of 6668889023 is about 81663.2660564100. The cubic root of 6668889023 is about 1882.2811662660.

The spelling of 6668889023 in words is "six billion, six hundred sixty-eight million, eight hundred eighty-nine thousand, twenty-three".