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seven77Number Seventy Seven Negative Properties. 77 is a Perfect Square or Not?. 77 is not a perfect square number . 77 is a Perfect Cube or Not?. 77 is not a perfect cube number . Is the numberNumber Seventy Seven Negative Properties. 77 is a Perfect Square or Not?. 77 is not a perfect square number . 77 is a Perfect Cube or Not?. 77 is not a perfect cube number . Is the number