16873566 has 8 divisors (see below), whose sum is σ = 33747144. Its totient is φ = 5624520.

The previous prime is 16873561. The next prime is 16873567. The reversal of 16873566 is 66537861.

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

16873566 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16873561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406125 + ... + 1406136.

It is an arithmetic number, because the mean of its divisors is an integer number (4218393).

Almost surely, 2^16873566 is an apocalyptic number.

16873566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16873566 is a wasteful number, since it uses less digits than its factorization.

16873566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812266.

The product of its digits is 181440, while the sum is 42.

The square root of 16873566 is about 4107.7446366589. The cubic root of 16873566 is about 256.4891262979.

It can be divided in two parts, 1687 and 3566, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 16873566 in words is "sixteen million, eight hundred seventy-three thousand, five hundred sixty-six".