6628019693 has 2 divisors, whose sum is σ = 6628019694. Its totient is φ = 6628019692.

The previous prime is 6628019683. The next prime is 6628019701. The reversal of 6628019693 is 3969108266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6168217444 + 459802249 = 78538^2 + 21443^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6628019693 is a prime.

It is a super-5 number, since 5×6628019693⁵ (a number of 50 digits) contains 55555 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6628019683) 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, 3314009846 + 3314009847.

It is an arithmetic number, because the mean of its divisors is an integer number (3314009847).

Almost surely, 2^6628019693 is an apocalyptic number.

It is an amenable number.

6628019693 is a deficient number, since it is larger than the sum of its proper divisors (1).

6628019693 is an equidigital number, since it uses as much as digits as its factorization.

6628019693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 6628019693 is about 81412.6506938572. The cubic root of 6628019693 is about 1878.4281879752.

The spelling of 6628019693 in words is "six billion, six hundred twenty-eight million, nineteen thousand, six hundred ninety-three".