6881839 has 2 divisors, whose sum is σ = 6881840. Its totient is φ = 6881838.

The previous prime is 6881803. The next prime is 6881843. The reversal of 6881839 is 9381886.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6881839 - 2¹⁵ = 6849071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6881795 and 6881804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6881869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3440919 + 3440920.

It is an arithmetic number, because the mean of its divisors is an integer number (3440920).

Almost surely, 2^6881839 is an apocalyptic number.

6881839 is a deficient number, since it is larger than the sum of its proper divisors (1).

6881839 is an equidigital number, since it uses as much as digits as its factorization.

6881839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 6881839 is about 2623.3259423869. The cubic root of 6881839 is about 190.2106527898.

The spelling of 6881839 in words is "six million, eight hundred eighty-one thousand, eight hundred thirty-nine".