Bachchan took to Twitter to express his gratitude towards his fans and said he felt speechless receiving their greetings.
"This is all I can express at the moment...!! I am too humbled by your love and greetings for the birthday!" he tweeted.
Wearing a florescent green colour kurta, Bachchan came out to address the media at his bungalow 'Janak' in suburban Juhu here while his famous song 'Aree Diwano' from the film "Don" was being played in the background.
The "Piku" star celebrated the birthday with a quiet dinner with family.