16864673 has 6 divisors (see below), whose sum is σ = 19618146. Its totient is φ = 14455392.

The previous prime is 16864669. The next prime is 16864691. The reversal of 16864673 is 37646861.

It can be written as a sum of positive squares in only one way, i.e., 10549504 + 6315169 = 3248^2 + 2513^2 .

It is not a de Polignac number, because 16864673 - 2² = 16864669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16864673.

It is not an unprimeable number, because it can be changed into a prime (16864613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172040 + ... + 172137.

It is an arithmetic number, because the mean of its divisors is an integer number (3269691).

Almost surely, 2^16864673 is an apocalyptic number.

It is an amenable number.

16864673 is a deficient number, since it is larger than the sum of its proper divisors (2753473).

16864673 is an equidigital number, since it uses as much as digits as its factorization.

16864673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344191 (or 344184 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 16864673 is about 4106.6620265125. The cubic root of 16864673 is about 256.4440585939. Note that the first 3 decimals are identical.

The spelling of 16864673 in words is "sixteen million, eight hundred sixty-four thousand, six hundred seventy-three".