6798608821 has 2 divisors, whose sum is σ = 6798608822. Its totient is φ = 6798608820.

The previous prime is 6798608819. The next prime is 6798608849. The reversal of 6798608821 is 1288068976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6643880100 + 154728721 = 81510^2 + 12439^2 .

It is a cyclic number.

It is not a de Polignac number, because 6798608821 - 2¹ = 6798608819 is a prime.

Together with 6798608819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6798606821) 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, 3399304410 + 3399304411.

It is an arithmetic number, because the mean of its divisors is an integer number (3399304411).

Almost surely, 2^6798608821 is an apocalyptic number.

It is an amenable number.

6798608821 is a deficient number, since it is larger than the sum of its proper divisors (1).

6798608821 is an equidigital number, since it uses as much as digits as its factorization.

6798608821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The square root of 6798608821 is about 82453.6768191692. The cubic root of 6798608821 is about 1894.4072675524.

The spelling of 6798608821 in words is "six billion, seven hundred ninety-eight million, six hundred eight thousand, eight hundred twenty-one".