6868819 has 2 divisors, whose sum is σ = 6868820. Its totient is φ = 6868818.

The previous prime is 6868817. The next prime is 6868837. The reversal of 6868819 is 9188686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6868819 - 2¹ = 6868817 is a prime.

It is a super-2 number, since 2×6868819² = 94361348909522, which contains 22 as substring.

Together with 6868817, it forms a pair of twin primes.

6868819 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6868811) 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, 3434409 + 3434410.

It is an arithmetic number, because the mean of its divisors is an integer number (3434410).

Almost surely, 2^6868819 is an apocalyptic number.

6868819 is a deficient number, since it is larger than the sum of its proper divisors (1).

6868819 is an equidigital number, since it uses as much as digits as its factorization.

6868819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 46.

The square root of 6868819 is about 2620.8431849311. The cubic root of 6868819 is about 190.0906215906.

The spelling of 6868819 in words is "six million, eight hundred sixty-eight thousand, eight hundred nineteen".