681296339 has 2 divisors, whose sum is σ = 681296340. Its totient is φ = 681296338.

The previous prime is 681296327. The next prime is 681296347. The reversal of 681296339 is 933692186.

681296339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-681296339 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 681296293 and 681296302.

It is not a weakly prime, because it can be changed into another prime (681296839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340648169 + 340648170.

It is an arithmetic number, because the mean of its divisors is an integer number (340648170).

Almost surely, 2^681296339 is an apocalyptic number.

681296339 is a deficient number, since it is larger than the sum of its proper divisors (1).

681296339 is an equidigital number, since it uses as much as digits as its factorization.

681296339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 47.

The square root of 681296339 is about 26101.6539514261. The cubic root of 681296339 is about 879.9243818460.

The spelling of 681296339 in words is "six hundred eighty-one million, two hundred ninety-six thousand, three hundred thirty-nine".