6805384987 has 2 divisors, whose sum is σ = 6805384988. Its totient is φ = 6805384986.

The previous prime is 6805384979. The next prime is 6805385033. The reversal of 6805384987 is 7894835086.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6805384987 - 2³ = 6805384979 is a prime.

It is not a weakly prime, because it can be changed into another prime (6805387987) 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, 3402692493 + 3402692494.

It is an arithmetic number, because the mean of its divisors is an integer number (3402692494).

Almost surely, 2^6805384987 is an apocalyptic number.

6805384987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6805384987 is an equidigital number, since it uses as much as digits as its factorization.

6805384987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The square root of 6805384987 is about 82494.7573303904. The cubic root of 6805384987 is about 1895.0364431186.

The spelling of 6805384987 in words is "six billion, eight hundred five million, three hundred eighty-four thousand, nine hundred eighty-seven".