6668146873 has 2 divisors, whose sum is σ = 6668146874. Its totient is φ = 6668146872.

The previous prime is 6668146801. The next prime is 6668146909. The reversal of 6668146873 is 3786418666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4554630144 + 2113516729 = 67488^2 + 45973^2 .

It is a cyclic number.

It is not a de Polignac number, because 6668146873 - 2¹⁷ = 6668015801 is a prime.

It is not a weakly prime, because it can be changed into another prime (6668140873) 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, 3334073436 + 3334073437.

It is an arithmetic number, because the mean of its divisors is an integer number (3334073437).

Almost surely, 2^6668146873 is an apocalyptic number.

It is an amenable number.

6668146873 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668146873 is an equidigital number, since it uses as much as digits as its factorization.

6668146873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 55.

The square root of 6668146873 is about 81658.7219652622. The cubic root of 6668146873 is about 1882.2113402032.

The spelling of 6668146873 in words is "six billion, six hundred sixty-eight million, one hundred forty-six thousand, eight hundred seventy-three".