Perfect Square
661437686233331754038745484825579283659760878013644800000016 is a perfect square (813288193836189751705600000004 × 813288193836189751705600000004)
661437686233331754038745484825579283659760878013644800000016 is a perfect square (813288193836189751705600000004 × 813288193836189751705600000004)
661437686233331754038745484825579283659760878013644800000016 is even
Previous even number is 661437686233331754038745484825579283659760878013644800000014
Next even number is 661437686233331754038745484825579283659760878013644800000018
289378863885908484351684419470171097918980479728693972522296771623345577213726651377152212223326832532883932911015838565644114888201808451502034756139947081763572234479206400004096
437499812769703426977861643094756169856266502172507270184016926933889034055490732414206712993532092915136436633600000256
1101001010111111000001110101001101100001000000111111111100000000000010111011111000000001000000101001110011110100010110100001001100000000111000011000101100111100100100100001000000000000000000000010000
1512770165154100777400027370010051636426411400703054744441000000020