16805065 has 16 divisors (see below), whose sum is σ = 21772800. Its totient is φ = 12413632.

The previous prime is 16805059. The next prime is 16805119. The reversal of 16805065 is 56050861.

It is a cyclic number.

It is not a de Polignac number, because 16805065 - 2⁷ = 16804937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816 + ... + 5854.

It is an arithmetic number, because the mean of its divisors is an integer number (1360800).

Almost surely, 2^16805065 is an apocalyptic number.

It is an amenable number.

16805065 is a deficient number, since it is larger than the sum of its proper divisors (4967735).

16805065 is a wasteful number, since it uses less digits than its factorization.

16805065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096.

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

The square root of 16805065 is about 4099.3981265547. The cubic root of 16805065 is about 256.1415690362.

The spelling of 16805065 in words is "sixteen million, eight hundred five thousand, sixty-five".