Perfect Square
665230227766493841 is a perfect square (815616471 × 815616471)
665230227766493841 is a perfect square (815616471 × 815616471)
665230227766493841 is odd
Previous odd number is 665230227766493839
Next odd number is 665230227766493843
1001 0011 1011 0101 1111 0101 1110 0001 1011 1101 1111 1100 0010 1001 0001