6696808213 has 2 divisors, whose sum is σ = 6696808214. Its totient is φ = 6696808212.

The previous prime is 6696808177. The next prime is 6696808241. The reversal of 6696808213 is 3128086966.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5385064689 + 1311743524 = 73383^2 + 36218^2 .

It is a cyclic number.

It is not a de Polignac number, because 6696808213 - 2⁹ = 6696807701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6696808273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3348404106 + 3348404107.

It is an arithmetic number, because the mean of its divisors is an integer number (3348404107).

Almost surely, 2^6696808213 is an apocalyptic number.

It is an amenable number.

6696808213 is a deficient number, since it is larger than the sum of its proper divisors (1).

6696808213 is an equidigital number, since it uses as much as digits as its factorization.

6696808213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 6696808213 is about 81834.0284539384. The cubic root of 6696808213 is about 1884.9042218571.

The spelling of 6696808213 in words is "six billion, six hundred ninety-six million, eight hundred eight thousand, two hundred thirteen".