16906 has 8 divisors (see below), whose sum is σ = 25920. Its totient is φ = 8268.

The previous prime is 16903. The next prime is 16921. The reversal of 16906 is 60961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (16901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105 + ... + 211.

It is an arithmetic number, because the mean of its divisors is an integer number (3240).

2¹⁶⁹⁰⁶ is an apocalyptic number.

16906 is the 70-th centered heptagonal number.

16906 is a deficient number, since it is larger than the sum of its proper divisors (9014).

16906 is a wasteful number, since it uses less digits than its factorization.

16906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 16906 is about 130.0230748752. The cubic root of 16906 is about 25.6653360379.

The spelling of 16906 in words is "sixteen thousand, nine hundred six".