Perfect Square
664857624790296441 is a perfect square (815388021 × 815388021)
664857624790296441 is a perfect square (815388021 × 815388021)
664857624790296441 is odd
Previous odd number is 664857624790296439
Next odd number is 664857624790296443
1001 0011 1010 0000 1100 0111 1100 1011 0111 1101 0101 1110 0111 0111 1001