Perfect Square
665305727409589650290864878175716039167866771903641737560064 is a perfect square (815662753476943833834342964992 × 815662753476943833834342964992)
665305727409589650290864878175716039167866771903641737560064 is a perfect square (815662753476943833834342964992 × 815662753476943833834342964992)
665305727409589650290864878175716039167866771903641737560064 is even
Previous even number is 665305727409589650290864878175716039167866771903641737560062
Next even number is 665305727409589650290864878175716039167866771903641737560066
294485412410845164588462177651813382656420662579531530432401559884925603447857825199065023242060993711928719667052993399543132688621025919457934937774187265726283952798362337542144
442631710924003209284642920092315373751446874761470897632453784079149388482860150771997224399635114327259580896007684096
1101001111111010100001111100101101001000111111101101010101010111100011011011101110001110100101110110100100010100011000001110001010111101110111100001010010111110001000001100000010000010000000000000000
1517724174551077552527433356164566442430161275674122761014020200000