In this work, we studied various properties of arithmetic function ˜ϕ, where ˜ϕ(n) = |{m ∈ N|1 ≤ m ≤ n, (m, n) = 1, m is not a prime}|. © Indian Mathematical Society, 2019.

Satyanarayana Reddy

Mathematics

(SoNS) School of Natural Sciences

Abhijit A.J.

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