Viswanath, popularly known as 'Kalatapasvi', was born in February 1930 in Andhra Pradesh.

Veteran actor and politician Jaya Prada recalled how megastar Amitabh Bachchan finished a song's filming despite being injured.

Hrithik revealed the news on Instagram, adding that his father is set to undergo surgery.

An emotional Viswanath, who attended the ceremony with his wife Jaya Lakshmi, thanked his parents and fans in a brief acceptance speech.