The number "77" is an integer that follows 76 and precedes 78. It is an odd number and can be expressed as the sum of two prime numbers: 37 + 40. In mathematics, 77 is also known as a semiprime because it is the product of two prime numbers, specifically 7 and 11. In popular culture, "77" can refer to various things, such as the 77th parallel north, which is a circle of latitude in the Northern Hemisphere. Additionally, it is often associated with the 77 Sunset Strip, a classic American television series that aired in the late 1950s and early 1960s.