668027843683 has 2 divisors, whose sum is σ = 668027843684. Its totient is φ = 668027843682.

The previous prime is 668027843663. The next prime is 668027843689. The reversal of 668027843683 is 386348720866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 668027843683 - 2¹³ = 668027835491 is a prime.

It is a super-3 number, since 3×668027843683³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (668027843689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334013921841 + 334013921842.

It is an arithmetic number, because the mean of its divisors is an integer number (334013921842).

Almost surely, 2^668027843683 is an apocalyptic number.

668027843683 is a deficient number, since it is larger than the sum of its proper divisors (1).

668027843683 is an equidigital number, since it uses as much as digits as its factorization.

668027843683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55738368, while the sum is 61.

The spelling of 668027843683 in words is "six hundred sixty-eight billion, twenty-seven million, eight hundred forty-three thousand, six hundred eighty-three".