The 37-year-old, who began his career with the 2003 romance, "Tujhe Meri Kasam" with Genelia D'Souza, to whom he got married in 2012, took to Twitter and wrote: "4 Million - Love You guys".
The "Ek Villain" actor joined the micro-blogging site in July 2009 and is even followed by film fraternity members like Anil Kapoor, Sridevi, Nikhil Advani and Sanjay Gupta.
Riteish, also a producer, will soon be seen in the upcoming Bollywood comedy satire film "Bangistan" along with actor Pulkit Samrat.