16804223 has 2 divisors, whose sum is σ = 16804224. Its totient is φ = 16804222.

The previous prime is 16804217. The next prime is 16804231. The reversal of 16804223 is 32240861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16804223 - 2¹⁸ = 16542079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16804192 and 16804201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16804213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8402111 + 8402112.

It is an arithmetic number, because the mean of its divisors is an integer number (8402112).

Almost surely, 2^16804223 is an apocalyptic number.

16804223 is a deficient number, since it is larger than the sum of its proper divisors (1).

16804223 is an equidigital number, since it uses as much as digits as its factorization.

16804223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 16804223 is about 4099.2954272655. The cubic root of 16804223 is about 256.1372910640.

The spelling of 16804223 in words is "sixteen million, eight hundred four thousand, two hundred twenty-three".