Your number, one digit away
One digit away
One change could reach Extreme.
Your number
6,639
Exceptional · Top 2.23%
Position 2: 6 → 9 · +213 points.
Gained: Binary palindrome, Digit sum 27, Zigzag digits, Harshad number.
Lost: Digit sum 24, Semiprime.
35 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.