Your number, one digit away
One digit away
One change could reach Extreme.
Your number
640,471
Standard · Top 90.7%
Position 1: 6 → 2 · +404 points.
Gained: Triangular number, Binary palindrome, Digit sum 18, Happy number.
Lost: Digit sum 22.
53 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.