Perfect Square
63897827067130712881 is a perfect square (7993611641 × 7993611641)
63897827067130712881 is a perfect square (7993611641 × 7993611641)
63897827067130712881 is odd
Previous odd number is 63897827067130712879
Next odd number is 63897827067130712883
110111011011000010101011110010110000011111101010101001001100110001
260890502281463996301612069406020456034433320513863345693841