Passage: The 2010 Summer Youth Olympics (Chinese: 第一届夏季青年奥林匹克运动会; pinyin: Dì Yī Jiè Xiàjì Qīngnián Àolínpǐkè Yùndònghuì Tamil: 2010 கோடைக்கால இளையோர் ஒலிம்பிக் விளையாட்டுக்கள் 2010 Kōṭaikkāla Iḷaiyōr Olimpik Viḷaiyāṭṭukkaḷ Malay: Sukan Olimpik Belia Musim Panas 2010) were the first edition of the Youth Olympic Games (YOG), an international multi-sport and cultural event for youths based on the tradition of the Olympic Games. Held in Singapore from 14 to 26 August 2010, it was the first International Olympic Committee-sanctioned event held in Southeast Asia. The Games featured about 3,600 athletes aged 14–18 from 204 nations, who competed in 201 events in 26 sports. No official medal tables were published, but the most successful nation was China, followed by Russia; hosts Singapore did not win any gold medals. Most unique features of the YOG, such as mixed-NOCs teams (comprising youths from different countries) and the Culture and Education Programme (CEP), made their debut at the 2010 Games.

Question: How many athletes were featured in the games?
3,600