Rehena Sultan was a supprise in Hum Rahe Na Hum.
This film had story by character actor Raj Bharti (Col.Kapoor) and the script & dialoges were by Vijay Anand who also the producer & editor of this film.
When Vijay Anand was busy with 2 big delayed films, Rajput & Ram bBalram, he produced and acted in 2 quickies, with other directors, Ghungroo Ki Awaaz & Hum Rahe Na Hum.
Hum Rahe Na Hum, was. directed by Vijay Anand's nephew, Chetan Anand's son Ketan Anand.
Hum Rahe Na Hum was made under the banner of Navketan Productions and this was the last film of Vijay Anand as producer & actor. The next and the last production of Vijay Anand is the completed & unreleased Jaana Na Door Dil Se.