The number 70 (seventy) is a significant integer in mathematics and culture. Based on the provided search results, here are key facts about the number 70:
Mathematics: 70 is a composite number, an Erdős–Woods number, a Pell number, and a central binomial coefficient.
Smallest Weird Number: 70 is the smallest weird number, meaning it is an abundant number (the sum of its proper divisors is greater than the number itself) that is not semi-perfect (no subset of its proper divisors sums to the number itself).
Cannonball Problem: It is part of the only non-trivial solution pair (24, 70) to the cannonball problem.
Religion: It is often used in religious traditions, notably with 72 elders translating the Torah into Greek (the Septuagint, or LXX). Spelling: In words, 70 is written as seventy.
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