838125

Appears in sequences

• a(n) = ((p-1)^3 - (p-1)^2)/4 where p is the n-th prime.at n=35A331764
• Numbers k for which gcd(k, A003961(k)) = gcd(sigma(k), A003961(k)) > 1, and that satisfy Euler's condition for odd perfect numbers (A228058).at n=19A387166