Your number, one digit away
One digit away
One change could reach Singular.
Your number
638
Extreme · Top 0.90%
Position 3: 8 → 3 · +331 points.
Gained: Binary palindrome, 2 distinct digits, Digit sum 12, Semiprime, Repeated digit.
Lost: Digit sum 17, 3 distinct digits, Happy number.
26 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.