666792000domain: NAppears in sequencesDenominators of partial sums of a series for 6*(5-4*Zeta(3)).at n=7A130558Powerful superabundant numbers: numbers m such that psigma(m)/m > psigma(k)/k for all k < m, where psigma(k) is the sum of powerful divisors of k (A183097).at n=37A349111