Perfect Square
642827216247393969 is a perfect square (801765063 × 801765063)
642827216247393969 is a perfect square (801765063 × 801765063)
642827216247393969 is odd
Previous odd number is 642827216247393967
Next odd number is 642827216247393971
1000 1110 1011 1100 0111 1111 0010 1000 0100 0110 0001 0000 1110 1011 0001