What's the mystery number?

• It's greater than one million but less than ten million.
• It's an even number.
• None of the digits is less than 3.
• No digit is used more than once.
• The sum of the digits in the ones period is 12.
• The digit in the ten thousands place is equal to the sum of the digits in the tens and hundreds places.
• The digit in the millions place is 2 more than the digit in the thousands place.
• The digit in the hundred thousands place is twice the digit in the tens place.