6785221039 has 2 divisors, whose sum is σ = 6785221040. Its totient is φ = 6785221038.

The previous prime is 6785221021. The next prime is 6785221087. The reversal of 6785221039 is 9301225876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6785221039 - 2⁹ = 6785220527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6785220986 and 6785221004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6785222039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3392610519 + 3392610520.

It is an arithmetic number, because the mean of its divisors is an integer number (3392610520).

Almost surely, 2^6785221039 is an apocalyptic number.

6785221039 is a deficient number, since it is larger than the sum of its proper divisors (1).

6785221039 is an equidigital number, since it uses as much as digits as its factorization.

6785221039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 6785221039 is about 82372.4531563799. The cubic root of 6785221039 is about 1893.1629650815.

The spelling of 6785221039 in words is "six billion, seven hundred eighty-five million, two hundred twenty-one thousand, thirty-nine".