Raj Kapoor for the last time sings in Mukesh's voice Ek Din Bikjayegaa...and Mukesh's last pucturised song on Raj Kapoor, also. Premnath's last film for R.K.Films. This film is Randhir Kapoor's second film as director, the firsr was Kal Aaj Aur Kal and third was Heena. This film is music composer R.D.Burman, lyricsts Majrooh, writer Prayag Raaj and Rekha their first film for R.K.Films.
Premnath plays the father of Narendranath in this film. In real life Narendranath is his younger brother
Raj Kapoor has acted only under his son Randhir Kapoor"s direction. Rishi and Rajiv Kapoor didn't get the chance to direct their father.
Dharam Karam was R.K.Films next film after Bobby and then came Satyam Shivam Sundaram.
Randhir Kapoor acted in 3 R.K.Films, Kal Aaj Aur Kal, Dharam Karam & Biwi O Biwi. Randhir Kapoor didn't get the chance to act under his father Raj Kapoor"s direction unlike his younger brothers like Rishi and Rajiv Kapoor.