July 30 (Bloomberg) -- Bloomsbury Publishing Plc said ``Harry Potter and the Deathly Hallows,'' the seventh and final book about the boy wizard, sold 573,845 copies in Australia in its first day on sale July 21.

Sales in Australia increased 64 percent from first-day sales of the sixth book, ``Harry Potter and the Half Blood Prince,'' published in July 2005, Bloomsbury, the London-based publisher of the novels, said in a statement.

The latest novel by J.K. Rowling sold 170,000 copies in the first 12 hours in India, Bloomsbury said. In Canada, the Raincoast/Bloomsbury edition -- a joint venture with Vancouver- based Raincoast -- sold 855,997 copies of the children's version of the book and 74,714 of the adult version, Bloomsbury said.

A boxed set of all seven books will be released on Oct. 1.

In China, Xi Dan Bookshop in Beijing and Shanghai Book City in Shanghai each sold more than 2,000 copies during the first weekend the book was on sale, Bloomsbury said.

Scholastic Corp. publishes the Harry Potter books in the U.S. Bloomsbury and Scholastic said last week that the book sold almost 11 million copies on its first day in the U.S. and U.K.