987,654 (nine hundred eighty-seven thousand, six hundred fifty-four).
987654
987653
You get the largest number if you sort the digits, from largest to smallest.
987,654
987653
999998
The number of variations that can be derived from six digits depends on whether the digits can be repeated and whether the order matters. If all six digits are unique and the order matters, the number of variations is 6! (factorial), which equals 720. If digits can be repeated, there would be (6^6) (6 raised to the power of 6), resulting in 46,656 variations.
the largest 6 digit number is 999999 however following the rules provided, the largest number would be 789643.
987654
874321 is the largest number made from all these digits.
111111. Since there are six digits, there must be a repeated digit, so why not repeat all ones to get the smallest one.
102345 is the smallest [positive] 6-digit number with no repeats.