Perfect Square
665789482973296081 is a perfect square (815959241 × 815959241)
665789482973296081 is a perfect square (815959241 × 815959241)
665789482973296081 is odd
Previous odd number is 665789482973296079
Next odd number is 665789482973296083
1001 0011 1101 0101 1100 0000 0001 1101 1011 1101 0000 0111 0101 1101 0001