Your number, one digit away
One digit away
One change could reach Extreme.
Your number
644,505
Standard · Top 78.8%
Position 2: 4 → 1 · +281 points.
Gained: Binary palindrome, Alternating parity, Digit sum 21, 5 distinct digits, Happy number, Repeated digit.
Lost: Digit sum 24, Double pair, 4 distinct digits.
53 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.