Roberts play in B'way club

It’s getting so you can’t swing a cat without hitting a millionaire on the Rialto these days.

Seven shows were members of the millionaires’ club — meaning each cracked more than a mil in grosses for the week ending June 18. That’s a rare achievement for a nonholiday week of eight performances (as opposed to nine, which last Christmas many shows squeezed into a boffo seven-day holiday sesh).

One production, though, did play a previously skedded nine perfs: Julia Roberts starrer “Three Days of Rain” ($1,046,354). Add in the strong sales of premium-priced tickets, and that extra perf during the show’s final week pushed the straight play into a club that often has a tuners-only membership policy. (Production, which averaged close to $1 million a week during its 12-week run, recouped in its fifth week, according to producer David Stone.)

With school getting out and summer tour buses beginning to arrive in Gotham, “The Drowsy Chaperone” ($1,016,050) cracked $1 million for the first time, and the Tony-anointed musical and play, “Jersey Boys” ($1,038,229) and “History Boys” ($772,219), had their best weeks yet. “The Color Purple” ($1,102,943) boasted its strongest biz ever for an eight-perf week.

In its debut week at the Minskoff, “The Lion King” ($1,194,854) was right back up in second place behind “Wicked” ($1,365,387).

Dips this week mostly were seen by long-runners, including “Beauty and the Beast” ($677,062), “The Producers” ($660,438) and “Hairspray” ($601,576).

Overall box office, though, was up nearly $1.4 million to $19,513,792. Look for that tally to drop now that “Three Days of Rain” has shuttered, along with the Roundabout’s hit revival of “The Pajama Game” ($364,524).

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