6800669 has 2 divisors, whose sum is σ = 6800670. Its totient is φ = 6800668.

The previous prime is 6800657. The next prime is 6800671. The reversal of 6800669 is 9660086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4120900 + 2679769 = 2030^2 + 1637^2 .

It is a cyclic number.

It is not a de Polignac number, because 6800669 - 2⁴ = 6800653 is a prime.

It is a super-2 number, since 2×6800669² = 92498197695122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 6800671, it forms a pair of twin primes.

It is a Chen 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 (6800609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3400334 + 3400335.

It is an arithmetic number, because the mean of its divisors is an integer number (3400335).

Almost surely, 2^6800669 is an apocalyptic number.

It is an amenable number.

6800669 is a deficient number, since it is larger than the sum of its proper divisors (1).

6800669 is an equidigital number, since it uses as much as digits as its factorization.

6800669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 6800669 is about 2607.8092338206. The cubic root of 6800669 is about 189.4598601986.

The spelling of 6800669 in words is "six million, eight hundred thousand, six hundred sixty-nine".