Learn to count up to and down from six. Includes mathematical info, prime factorization, divisors, bases and much more! Explore the curious properties of number 6, an even composite number composed of two distinct primes. Learn to draw 6 tally marks. · a west arabic numeral, ultimately from indic numerals (compare devanagari ६ (6)). See the number 6 with objects that sometimes come to life for a fun. Created by teachers, learn how to show 6 in a ten frame. This makes 6 the answer to the two-dimensional kissing number problem. 6 is the 2nd superior highly composite number, [6] the 2nd colossally abundant number, [7] the 3rd triangular number, [8] the 4th highly composite number, [9] a pronic number, [10] a congruent number, [11] a harmonic divisor number, [12] and a semiprime. See 6 § evolution of the hindu-arabic digit for more.