16686337 has 2 divisors, whose sum is σ = 16686338. Its totient is φ = 16686336.

The previous prime is 16686331. The next prime is 16686353. The reversal of 16686337 is 73368661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 6548481 = 3184^2 + 2559^2 .

It is a cyclic number.

It is not a de Polignac number, because 16686337 - 2¹¹ = 16684289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16686337.

It is not a weakly prime, because it can be changed into another prime (16686331) 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, 8343168 + 8343169.

It is an arithmetic number, because the mean of its divisors is an integer number (8343169).

Almost surely, 2^16686337 is an apocalyptic number.

It is an amenable number.

16686337 is a deficient number, since it is larger than the sum of its proper divisors (1).

16686337 is an equidigital number, since it uses as much as digits as its factorization.

16686337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 16686337 is about 4084.8913082235. The cubic root of 16686337 is about 255.5369283700.

The spelling of 16686337 in words is "sixteen million, six hundred eighty-six thousand, three hundred thirty-seven".