6843688879 has 2 divisors, whose sum is σ = 6843688880. Its totient is φ = 6843688878.

The previous prime is 6843688837. The next prime is 6843688883. The reversal of 6843688879 is 9788863486.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6843688879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6843688829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3421844439 + 3421844440.

It is an arithmetic number, because the mean of its divisors is an integer number (3421844440).

Almost surely, 2^6843688879 is an apocalyptic number.

6843688879 is a deficient number, since it is larger than the sum of its proper divisors (1).

6843688879 is an equidigital number, since it uses as much as digits as its factorization.

6843688879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111476736, while the sum is 67.

The square root of 6843688879 is about 82726.5911240153. The cubic root of 6843688879 is about 1898.5851774711.

The spelling of 6843688879 in words is "six billion, eight hundred forty-three million, six hundred eighty-eight thousand, eight hundred seventy-nine".