The number 615 is an integer that follows 614 and precedes 616. It is an odd number and can be expressed as the sum of the digits 6, 1, and 5, which equals 12. In mathematics, 615 can also be factored into its prime components, which are 3, 5, and 41. In the context of area codes, 615 is the telephone area code for parts of Tennessee, including the city of Nashville. This area code was established in 1954 and is used for both landline and mobile phone services in the region.