6668074129 has 2 divisors, whose sum is σ = 6668074130. Its totient is φ = 6668074128.

The previous prime is 6668074123. The next prime is 6668074157. The reversal of 6668074129 is 9214708666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6662314129 + 5760000 = 81623^2 + 2400^2 .

It is a cyclic number.

It is not a de Polignac number, because 6668074129 - 2¹⁵ = 6668041361 is a prime.

It is not a weakly prime, because it can be changed into another prime (6668074123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334037064 + 3334037065.

It is an arithmetic number, because the mean of its divisors is an integer number (3334037065).

Almost surely, 2^6668074129 is an apocalyptic number.

It is an amenable number.

6668074129 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668074129 is an equidigital number, since it uses as much as digits as its factorization.

6668074129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 6668074129 is about 81658.2765492880. The cubic root of 6668074129 is about 1882.2044957189.

The spelling of 6668074129 in words is "six billion, six hundred sixty-eight million, seventy-four thousand, one hundred twenty-nine".