Your number, one digit away

One digit away

One change could reach Singular.

Your number

661

Extreme · Top 0.13%

Best one-digit neighbour

666

Singular · Top <0.01%

Position 3: 1 → 6 · +511 points.

Gained: All digits identical, Triangular number, Palindrome, Digit sum 18, 1 distinct digit, Harshad number.

Lost: 2 distinct digits, Digit sum 13, Prime, Repeated digit.

26 legal neighbours · same digit length · no leading zeros. This describes an alternative number, not the odds of your next roll.