The virus has killed over 51,000 globally with the largest number of deaths in Italy, followed by Spain and the United States.
The first 100,000 cases were reported in around 55 days and the first 500,000 in 76 days. Cases doubled to 1 million within the past eight days.
Total cases reported by Thursday grew 10% from a day earlier, the first time the rate has hit double digits since the virus took hold outside China.
There are 117 countries and territories that have reported over 100 cases, 50 with outbreaks of over 1,000 and seven that have reported 50,000 or more COVID-19 cases, mainly in Europe.
The global fatality rate is now over 5% of all reported cases, with countries including the United Kingdom, the United States and Spain reporting a spike in fatalities over recent days.