685033339 has 2 divisors, whose sum is σ = 685033340. Its totient is φ = 685033338.

The previous prime is 685033337. The next prime is 685033361. The reversal of 685033339 is 933330586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 685033339 - 2¹ = 685033337 is a prime.

Together with 685033337, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (685033333) 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, 342516669 + 342516670.

It is an arithmetic number, because the mean of its divisors is an integer number (342516670).

Almost surely, 2^685033339 is an apocalyptic number.

685033339 is a deficient number, since it is larger than the sum of its proper divisors (1).

685033339 is an equidigital number, since it uses as much as digits as its factorization.

685033339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 40.

The square root of 685033339 is about 26173.1415577114. The cubic root of 685033339 is about 881.5302828664.

The spelling of 685033339 in words is "six hundred eighty-five million, thirty-three thousand, three hundred thirty-nine".