16697873 has 2 divisors, whose sum is σ = 16697874. Its totient is φ = 16697872.

The previous prime is 16697869. The next prime is 16697899. The reversal of 16697873 is 37879661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10387729 + 6310144 = 3223^2 + 2512^2 .

It is an emirp because it is prime and its reverse (37879661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16697873 - 2² = 16697869 is a prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (16697843) 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 as a sum of consecutive naturals, namely, 8348936 + 8348937.

It is an arithmetic number, because the mean of its divisors is an integer number (8348937).

Almost surely, 2^16697873 is an apocalyptic number.

It is an amenable number.

16697873 is a deficient number, since it is larger than the sum of its proper divisors (1).

16697873 is an equidigital number, since it uses as much as digits as its factorization.

16697873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 47.

The square root of 16697873 is about 4086.3030969325. The cubic root of 16697873 is about 255.5958027839.

The spelling of 16697873 in words is "sixteen million, six hundred ninety-seven thousand, eight hundred seventy-three".