16666804 has 48 divisors (see below), whose sum is σ = 37086336. Its totient is φ = 6364800.

The previous prime is 16666799. The next prime is 16666807. The reversal of 16666804 is 40866661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16666807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15814 + ... + 16834.

It is an arithmetic number, because the mean of its divisors is an integer number (772632).

Almost surely, 2^16666804 is an apocalyptic number.

16666804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16666804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18543168).

16666804 is an abundant number, since it is smaller than the sum of its proper divisors (20419532).

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

16666804 is a wasteful number, since it uses less digits than its factorization.

16666804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 16666804 is about 4082.4997244335. The cubic root of 16666804 is about 255.4371790614.

The spelling of 16666804 in words is "sixteen million, six hundred sixty-six thousand, eight hundred four".