16804817 has 2 divisors, whose sum is σ = 16804818. Its totient is φ = 16804816.

The previous prime is 16804783. The next prime is 16804841. The reversal of 16804817 is 71840861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16072081 + 732736 = 4009^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 16804817 - 2¹⁰ = 16803793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16804847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8402408 + 8402409.

It is an arithmetic number, because the mean of its divisors is an integer number (8402409).

Almost surely, 2^16804817 is an apocalyptic number.

It is an amenable number.

16804817 is a deficient number, since it is larger than the sum of its proper divisors (1).

16804817 is an equidigital number, since it uses as much as digits as its factorization.

16804817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 16804817 is about 4099.3678781002. The cubic root of 16804817 is about 256.1403090307.

The spelling of 16804817 in words is "sixteen million, eight hundred four thousand, eight hundred seventeen".