16685005 has 16 divisors (see below), whose sum is σ = 21617280. Its totient is φ = 12324928.

The previous prime is 16684963. The next prime is 16685017. The reversal of 16685005 is 50058661.

It is a cyclic number.

It is not a de Polignac number, because 16685005 - 2²³ = 8296397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834 + ... + 5836.

It is an arithmetic number, because the mean of its divisors is an integer number (1351080).

Almost surely, 2^16685005 is an apocalyptic number.

It is an amenable number.

16685005 is a deficient number, since it is larger than the sum of its proper divisors (4932275).

16685005 is a wasteful number, since it uses less digits than its factorization.

16685005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 16685005 is about 4084.7282651359. The cubic root of 16685005 is about 255.5301287101.

The spelling of 16685005 in words is "sixteen million, six hundred eighty-five thousand, five".