16804937 has 2 divisors, whose sum is σ = 16804938. Its totient is φ = 16804936.

The previous prime is 16804933. The next prime is 16804939. The reversal of 16804937 is 73940861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16801801 + 3136 = 4099^2 + 56^2 .

It is an emirp because it is prime and its reverse (73940861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16804937 - 2² = 16804933 is a prime.

Together with 16804939, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16804937.

It is not a weakly prime, because it can be changed into another prime (16804933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8402468 + 8402469.

It is an arithmetic number, because the mean of its divisors is an integer number (8402469).

Almost surely, 2^16804937 is an apocalyptic number.

It is an amenable number.

16804937 is a deficient number, since it is larger than the sum of its proper divisors (1).

16804937 is an equidigital number, since it uses as much as digits as its factorization.

16804937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 16804937 is about 4099.3825144770. The cubic root of 16804937 is about 256.1409187123.

The spelling of 16804937 in words is "sixteen million, eight hundred four thousand, nine hundred thirty-seven".