668675760593 has 2 divisors, whose sum is σ = 668675760594. Its totient is φ = 668675760592.

The previous prime is 668675760583. The next prime is 668675760631. The reversal of 668675760593 is 395067576866.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 668432150929 + 243609664 = 817577^2 + 15608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-668675760593 is a prime.

It is not a weakly prime, because it can be changed into another prime (668675760503) 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, 334337880296 + 334337880297.

It is an arithmetic number, because the mean of its divisors is an integer number (334337880297).

Almost surely, 2^668675760593 is an apocalyptic number.

It is an amenable number.

668675760593 is a deficient number, since it is larger than the sum of its proper divisors (1).

668675760593 is an equidigital number, since it uses as much as digits as its factorization.

668675760593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 342921600, while the sum is 68.

The spelling of 668675760593 in words is "six hundred sixty-eight billion, six hundred seventy-five million, seven hundred sixty thousand, five hundred ninety-three".