The number "601" can refer to various contexts, including numerical values, area codes, or even specific codes in different systems. In mathematics, it is an integer that follows 600 and precedes 602. It is also a composite number, meaning it has divisors other than one and itself. In telecommunications, 601 is an area code in the United States, primarily serving the state of Mississippi. This area code was established in 1947 and covers several cities, including Jackson, the state capital. Area codes are essential for routing telephone calls efficiently.