668227727 has 2 divisors, whose sum is σ = 668227728. Its totient is φ = 668227726.

The previous prime is 668227711. The next prime is 668227759. The reversal of 668227727 is 727722866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 668227727 - 2⁴ = 668227711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (668227787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334113863 + 334113864.

It is an arithmetic number, because the mean of its divisors is an integer number (334113864).

Almost surely, 2^668227727 is an apocalyptic number.

668227727 is a deficient number, since it is larger than the sum of its proper divisors (1).

668227727 is an equidigital number, since it uses as much as digits as its factorization.

668227727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 47.

The square root of 668227727 is about 25850.1011023168. The cubic root of 668227727 is about 874.2617891242.

The spelling of 668227727 in words is "six hundred sixty-eight million, two hundred twenty-seven thousand, seven hundred twenty-seven".