Perfect Square
666920168424825661544486903585493564605712890625 is a perfect square (816651803662261962890625 × 816651803662261962890625)
666920168424825661544486903585493564605712890625 is a perfect square (816651803662261962890625 × 816651803662261962890625)
666920168424825661544486903585493564605712890625 is odd
Previous odd number is 666920168424825661544486903585493564605712890623
Next odd number is 666920168424825661544486903585493564605712890627
111010011010001101111000001001000010101000000110000101110100101001010000000011100100111001111010000111101010001000010000000000010000101000111001111101100000001
296634427183081888196884901391329132631040972026955971365632771835667723098729583108196588080212319758245664846896261224173940718173980712890625
444782511051797827316397533132785279679088924916636181051965426291872063302434980869293212890625