Perfect Square
667469210772676321 is a perfect square (816987889 × 816987889)
667469210772676321 is a perfect square (816987889 × 816987889)
667469210772676321 is odd
Previous odd number is 667469210772676319
Next odd number is 667469210772676323
1001 0100 0011 0101 0011 1011 0101 1111 0110 1001 1101 1001 1110 1110 0001