Sixty Five Thousand Either Way

You keep one HyperLogLog per day of unique visitors, sized at $m = 16384$ registers. Yesterday's sketch reports $8{,}000{,}000$ distinct visitors. The estimator's relative standard error is

$\sigma_{rel} \approx \frac{1.04}{\sqrt{m}}$

and the analysis stores 5 bits per register. What is the one standard error band around that estimate, and how much memory does one day's sketch occupy?