6865983947 has 2 divisors, whose sum is σ = 6865983948. Its totient is φ = 6865983946.

The previous prime is 6865983941. The next prime is 6865983959. The reversal of 6865983947 is 7493895686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6865983947 - 2¹⁰ = 6865982923 is a prime.

It is not a weakly prime, because it can be changed into another prime (6865983941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3432991973 + 3432991974.

It is an arithmetic number, because the mean of its divisors is an integer number (3432991974).

Almost surely, 2^6865983947 is an apocalyptic number.

6865983947 is a deficient number, since it is larger than the sum of its proper divisors (1).

6865983947 is an equidigital number, since it uses as much as digits as its factorization.

6865983947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78382080, while the sum is 65.

The square root of 6865983947 is about 82861.2330767531. The cubic root of 6865983947 is about 1900.6446517036.

The spelling of 6865983947 in words is "six billion, eight hundred sixty-five million, nine hundred eighty-three thousand, nine hundred forty-seven".