797

797 is a natural number that follows 796 and precedes 798. In mathematics, it is a prime number, and its decimal representation is a palindrome (797 reads the same forwards and backwards). It is odd and has exactly two positive divisors: 1 and 797. In common numeral systems, 797 is written as 0x31D in hexadecimal and 1100011101 in binary. In Roman numerals, it is DCCXCVII.

As a calendar year, 797 can refer to the year AD 797 in the early medieval period, a time when various regions in Europe and Asia had distinct historical developments. It can also denote the year 797 BCE in ancient chronology, depending on the era being discussed.

In culture and technology, 797 is used as a designation or model number in various contexts, including transportation, consumer electronics, and cataloging. These uses are not standardized and vary by organization or country.