Sanjay Onkar and NVN Babu 2026. Numerical Approximation of Arithmetic Functions and Their Summatory Behavior Using Hybrid Analytic–Computational Techniques. International Journal of Multidisciplinary Science and Innovation. 2, 1 (Jun. 2026), 123–128. DOI:https://doi.org/10.62896/ijmsi.2.s1.14.