Perfect Square
664485197926948225 is a perfect square (815159615 × 815159615)
664485197926948225 is a perfect square (815159615 × 815159615)
664485197926948225 is odd
Previous odd number is 664485197926948223
Next odd number is 664485197926948227
1001 0011 1000 1011 1001 1100 0100 0101 0100 1111 0000 1101 1101 1000 0001