Your number, one digit away
One digit away
One change could reach Exceptional.
Your number
644,777
Rare · Top 8.33%
Position 3: 4 → 9 · +68 points.
Gained: Digit sum 40, Prime, Happy number, 4 distinct digits.
Lost: Digit sum 35, Semiprime, 3 distinct digits.
53 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.