Your number, one digit away
One digit away
One change could reach Extreme.
Your number
644,501
Standard · Top 69.7%
Position 2: 4 → 3 · +336 points.
Gained: Triangular number, Ascending segment, Digit sum 19, 6 distinct digits, Alternating parity.
Lost: Digit sum 20, 5 distinct digits, Happy number, Repeated digit.
53 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.