668824627 has 2 divisors, whose sum is σ = 668824628. Its totient is φ = 668824626.

The previous prime is 668824621. The next prime is 668824661. The reversal of 668824627 is 726428866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 668824627 - 2¹¹ = 668822579 is a prime.

It is not a weakly prime, because it can be changed into another prime (668824621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334412313 + 334412314.

It is an arithmetic number, because the mean of its divisors is an integer number (334412314).

Almost surely, 2^668824627 is an apocalyptic number.

668824627 is a deficient number, since it is larger than the sum of its proper divisors (1).

668824627 is an equidigital number, since it uses as much as digits as its factorization.

668824627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 49.

The square root of 668824627 is about 25861.6439345994. The cubic root of 668824627 is about 874.5220255359.

The spelling of 668824627 in words is "six hundred sixty-eight million, eight hundred twenty-four thousand, six hundred twenty-seven".