668054683 has 2 divisors, whose sum is σ = 668054684. Its totient is φ = 668054682.

The previous prime is 668054669. The next prime is 668054689. The reversal of 668054683 is 386450866.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-668054683 is a prime.

It is not a weakly prime, because it can be changed into another prime (668054689) 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, 334027341 + 334027342.

It is an arithmetic number, because the mean of its divisors is an integer number (334027342).

Almost surely, 2^668054683 is an apocalyptic number.

668054683 is a deficient number, since it is larger than the sum of its proper divisors (1).

668054683 is an equidigital number, since it uses as much as digits as its factorization.

668054683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 668054683 is about 25846.7538193871. The cubic root of 668054683 is about 874.1863164414.

The spelling of 668054683 in words is "six hundred sixty-eight million, fifty-four thousand, six hundred eighty-three".