16669

16669 is the natural number that follows 16668 and precedes 16670. It is an odd composite number. Its prime factorization is 79 × 211, making it a semiprime. Consequently, its positive divisors are 1, 79, 211, and 16669, giving it exactly four divisors.

Both prime factors are congruent to 3 modulo 4, so 16669 is a Blum integer and, accordingly, cannot be expressed as a sum of two squares.

In other common representations, 16669 is 0x411D in hexadecimal and binary representation is 100000100011101.

The decimal digits are 1, 6, 6, 6, 9, featuring three consecutive sixes.

Beyond these arithmetic properties, 16669 does not have widely recognized significance in science, culture, or geography. It is primarily of interest in the context of number theory as an example of a semiprime and a Blum integer.