16804005 has 16 divisors (see below), whose sum is σ = 27101184. Its totient is φ = 8890560.

The previous prime is 16804003. The next prime is 16804019. The reversal of 16804005 is 50040861.

It is not a de Polignac number, because 16804005 - 2¹ = 16804003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16804003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2506 + ... + 6315.

It is an arithmetic number, because the mean of its divisors is an integer number (1693824).

Almost surely, 2^16804005 is an apocalyptic number.

16804005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16804005 is a deficient number, since it is larger than the sum of its proper divisors (10297179).

16804005 is a wasteful number, since it uses less digits than its factorization.

16804005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8956.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 16804005 is about 4099.2688372440. The cubic root of 16804005 is about 256.1361834422.

Adding to 16804005 its reverse (50040861), we get a palindrome (66844866).

The spelling of 16804005 in words is "sixteen million, eight hundred four thousand, five".