Nachiarthottam is a village in Kumbakonam tehsil in district of Thanjavur, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Nachiarthottam was 66 which includes 34 males and 32 females. Nachiarthottam covers 27.3 ha area. Pincode of Nachiarthottam is 612401.