Queen Windsor Castle  Heathrow Expansion
Britain's Queen Elizabeth II will become the country's longest-reigning monarch on 9 SeptemberREUTERS/Hannibal Hanschke

It is more than 63 years since Queen Elizabeth II's accession to the throne on February 6, 1952. Come Wednesday (9 September) she will be the longest reigning British monarch ever, overtaking her great-great grandmother Queen Victoria to set a new record.

To mark the occasion, here is the Queen by the numbers.

63 and 216

Years and days of the Queen's reign on 9 September, when she will set a new record.

23,226

The total number of days of the Queen's reign come 9 September.

25

The age at which Elizabeth Windsor took the throne when her father, King George IV, died.

27 million

The number of people in Britain who crowded around their black and white televisions to watch the coronation in 1953.

12

The number of prime ministers who have served under the Queen, the first being Winston Churchill, the latest David Cameron.

340 million

The Queen's total wealth in pounds, as estimated by The Sunday Times Rich List.

15

The number of Commonwealth countries, outside of the UK, that still have the Queen as their sovereign.

2

The number of Corgis owned by the Queen. They're called Holly and Willow.

2

The number of Dorgis -- a cross-breed of Dachshund and Corgi -- she owns. They're called Candy and Vulcan.

13

Her occupied royal residences, including Buckingham Palace and Gleneagles.

23

Her unoccupied royal residences, which includes the Tower of London, Leeds Castle and Hampton Court Palace, among others.

Queen Elizabeth II: The life and legacy of Britain's longest reigning monarchIBTimes UK

More coverage of Queen Elizabeth II's record reign in our Flipboard magazine

Do you remember the Queen's coronation? E-mail your memories of the day to editorial@ibtimes.co.uk