70 is the natural number that follows 69 and precedes 71. In English, it is written as seventy. It is a composite number with the prime factorization of 2 × 5 × 7. Quick Facts
Properties: It is classified as the smallest weird number, which means it is abundant but not semiperfect. Roman Numeral: Written as LXX.
Historical Significance: The Septuagint (the Greek Old Testament) translates to “seventy” because of the tradition that 72 Jewish scholars translated it. Additionally, the Second Temple in Jerusalem was destroyed in 70 AD.