6628207717 has 2 divisors, whose sum is σ = 6628207718. Its totient is φ = 6628207716.

The previous prime is 6628207679. The next prime is 6628207721. The reversal of 6628207717 is 7177028266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5110248196 + 1517959521 = 71486^2 + 38961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6628207717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6628207727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3314103858 + 3314103859.

It is an arithmetic number, because the mean of its divisors is an integer number (3314103859).

Almost surely, 2^6628207717 is an apocalyptic number.

It is an amenable number.

6628207717 is a deficient number, since it is larger than the sum of its proper divisors (1).

6628207717 is an equidigital number, since it uses as much as digits as its factorization.

6628207717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 6628207717 is about 81413.8054447770. The cubic root of 6628207717 is about 1878.4459502560.

The spelling of 6628207717 in words is "six billion, six hundred twenty-eight million, two hundred seven thousand, seven hundred seventeen".