6865783679 has 2 divisors, whose sum is σ = 6865783680. Its totient is φ = 6865783678.

The previous prime is 6865783667. The next prime is 6865783697. The reversal of 6865783679 is 9763875686.

Together with next prime (6865783697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6865783679 - 2¹⁶ = 6865718143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6865783619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3432891839 + 3432891840.

It is an arithmetic number, because the mean of its divisors is an integer number (3432891840).

Almost surely, 2^6865783679 is an apocalyptic number.

6865783679 is a deficient number, since it is larger than the sum of its proper divisors (1).

6865783679 is an equidigital number, since it uses as much as digits as its factorization.

6865783679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91445760, while the sum is 65.

The square root of 6865783679 is about 82860.0246138028. The cubic root of 6865783679 is about 1900.6261720991.

The spelling of 6865783679 in words is "six billion, eight hundred sixty-five million, seven hundred eighty-three thousand, six hundred seventy-nine".