The Director, Hrishikesh Mukherjee, filmed almost the entire film around his own bungalow at Bandra, in Mumbai in 40 days.
The song "Sab Golmaal Hain" was used in the film Hera Pheri.
Hrishikesh Mukherjee was inspired by a Bengali film, Kancha Meetha, whose hero similarly fabricates one lie after another.
Amitabh Bachchan had a cameo in this movie. He was also seen in the 2012 remake of this movie (Bol Bachchan) making his cameo in the promotional music video.
The Name of Bhavani Shankar's (Utpal Dutt's Bungalow) in the movie is Bindiya. Bindiya Gowsami, plays the role of Bhavani Shankar's daughter, Urmila in the movie.
You can see that in the scene, where Amol Palekar gets caught and Bhavani Shankar is taking his car out of the gate to chase him
You can see that in the scene, where Amol Palekar gets caught and Bhavani Shankar is taking his car out of the gate to chase him