Perfect Square
640676896184476224495240624001 is a perfect square (800422948312001 × 800422948312001)
640676896184476224495240624001 is a perfect square (800422948312001 × 800422948312001)
640676896184476224495240624001 is odd
Previous odd number is 640676896184476224495240623999
Next odd number is 640676896184476224495240624003
1000 0001 0110 0010 0011 1000 0001 1110 0111 0011 1001 0101 0101 0010 0101 0001 0100 0110 0100 0000 1000 0011 0111 1000 0001
262976650063443946816687995269702972453124040079355239358892583187272089065343837849872001
410466885304574125824851336920145978611479780108899857248001