16685285 has 8 divisors (see below), whose sum is σ = 20668416. Its totient is φ = 12917520.

The previous prime is 16685257. The next prime is 16685297. The reversal of 16685285 is 58258661.

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

It is not a de Polignac number, because 16685285 - 2⁸ = 16685029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53669 + ... + 53978.

It is an arithmetic number, because the mean of its divisors is an integer number (2583552).

Almost surely, 2^16685285 is an apocalyptic number.

It is an amenable number.

16685285 is a deficient number, since it is larger than the sum of its proper divisors (3983131).

16685285 is a wasteful number, since it uses less digits than its factorization.

16685285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107683.

The product of its digits is 115200, while the sum is 41.

The square root of 16685285 is about 4084.7625389978. The cubic root of 16685285 is about 255.5315580981.

The spelling of 16685285 in words is "sixteen million, six hundred eighty-five thousand, two hundred eighty-five".