Perfect Square
640676896184479426187033872009 is a perfect square (800422948312003 × 800422948312003)
640676896184479426187033872009 is a perfect square (800422948312003 × 800422948312003)
640676896184479426187033872009 is odd
Previous odd number is 640676896184479426187033872007
Next odd number is 640676896184479426187033872011
1000 0001 0110 0010 0011 1000 0001 1110 0111 0011 1001 0110 0000 1000 0101 0000 0000 0101 1010 0000 1100 1000 0110 1000 1001
262976650063447889382062234468471295525845659805965876688586620626189538248067731598896729
410466885304578228324772611817472086864537242946678993696081