Perfect Square
664485178363117609 is a perfect square (815159603 × 815159603)
664485178363117609 is a perfect square (815159603 × 815159603)
664485178363117609 is odd
Previous odd number is 664485178363117607
Next odd number is 664485178363117611
1001 0011 1000 1011 1001 1011 1111 1100 0110 1101 1000 1000 0000 0010 1001