The (Nashville) Tennessean confirmed Hebb died Tuesday but did not report the cause.
"'Sunny' is one of the mammoth songs in pop music history," Country Music Hall of Fame Museum editor Michael Gray told The Tennessean. "But beyond that, Bobby's is one of the most interesting musical stories I've ever heard. He represented the multi-racial musical milieu of 1960s Nashville better than anyone else."
In addition to singing and writing, Hebb also played guitar, trumpet, percussion and piano, the newspaper noted.
Hebb is survived by his daughter, Kitoto Von Hebb; and four sisters, Helen Hebb-McCray, Ednaearle Burney, Shirley Trotter and Cleevette Davidson.