6816841 has 2 divisors, whose sum is σ = 6816842. Its totient is φ = 6816840.

The previous prime is 6816829. The next prime is 6816851. The reversal of 6816841 is 1486186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3594816 + 3222025 = 1896^2 + 1795^2 .

It is a cyclic number.

It is not a de Polignac number, because 6816841 - 2¹⁵ = 6784073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6816797 and 6816806.

It is not a weakly prime, because it can be changed into another prime (6816851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3408420 + 3408421.

It is an arithmetic number, because the mean of its divisors is an integer number (3408421).

Almost surely, 2^6816841 is an apocalyptic number.

It is an amenable number.

6816841 is a deficient number, since it is larger than the sum of its proper divisors (1).

6816841 is an equidigital number, since it uses as much as digits as its factorization.

6816841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 34.

The square root of 6816841 is about 2610.9080795769. The cubic root of 6816841 is about 189.6099199146.

The spelling of 6816841 in words is "six million, eight hundred sixteen thousand, eight hundred forty-one".