Perfect Square
669199393389729488147761 is a perfect square (818046082681 × 818046082681)
669199393389729488147761 is a perfect square (818046082681 × 818046082681)
10001101 10110101 01011111 00101110 10111101 10011101 11010011 01001001 10010101 00110001
669199393389729488147761 is odd
Previous odd number is 669199393389729488147759
Next odd number is 669199393389729488147763
299686110916381388370440882430351717288776707474376844312951148324072081