628604820643 has 2 divisors, whose sum is σ = 628604820644. Its totient is φ = 628604820642.

The previous prime is 628604820607. The next prime is 628604820673. The reversal of 628604820643 is 346028406826.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628604820643 is a prime.

It is not a weakly prime, because it can be changed into another prime (628604820673) 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, 314302410321 + 314302410322.

It is an arithmetic number, because the mean of its divisors is an integer number (314302410322).

Almost surely, 2^628604820643 is an apocalyptic number.

628604820643 is a deficient number, since it is larger than the sum of its proper divisors (1).

628604820643 is an equidigital number, since it uses as much as digits as its factorization.

628604820643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2654208, while the sum is 49.

The spelling of 628604820643 in words is "six hundred twenty-eight billion, six hundred four million, eight hundred twenty thousand, six hundred forty-three".