Your number, one digit away
One digit away
One change could reach Exceptional.
Your number
640,729
Notable · Top 43.2%
Position 2: 4 → 7 · +144 points.
Gained: Alternating parity, Digit sum 31, Prime, 5 distinct digits, Zigzag digits, Happy number, Repeated digit.
Lost: Digit sum 28, 6 distinct digits, Semiprime.
53 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.