Perfect Square
642827245110936561 is a perfect square (801765081 × 801765081)
642827245110936561 is a perfect square (801765081 × 801765081)
642827245110936561 is odd
Previous odd number is 642827245110936559
Next odd number is 642827245110936563
1000 1110 1011 1100 0111 1111 1001 0011 1100 1100 0111 1100 0011 1111 0001