Your number, one digit away
One digit away
One change could reach Extreme.
Your number
644,571
Standard · Top 80.6%
Position 1: 6 → 4 · +291 points.
Gained: Binary palindrome, Adjacent digit run, Digit sum 25, Semiprime, Triple digit, 4 distinct digits.
Lost: Digit sum 27, 5 distinct digits, Harshad number, Repeated digit.
53 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.