Your number, one digit away
One digit away
One change could reach Extreme.
Your number
644,999
Exceptional · Top 2.45%
Position 1: 6 → 9 · +128 points.
Gained: Digit sum 44, Only two distinct digits, 2 distinct digits, Semiprime, Happy number, Quadruple digit.
Lost: Digit sum 41, Prime, 3 distinct digits, Triple digit.
53 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.