16683397 has 2 divisors, whose sum is σ = 16683398. Its totient is φ = 16683396.

The previous prime is 16683391. The next prime is 16683421. The reversal of 16683397 is 79338661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16208676 + 474721 = 4026^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 16683397 - 2³ = 16683389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16683391) 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, 8341698 + 8341699.

It is an arithmetic number, because the mean of its divisors is an integer number (8341699).

Almost surely, 2^16683397 is an apocalyptic number.

It is an amenable number.

16683397 is a deficient number, since it is larger than the sum of its proper divisors (1).

16683397 is an equidigital number, since it uses as much as digits as its factorization.

16683397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 43.

The square root of 16683397 is about 4084.5314296746. The cubic root of 16683397 is about 255.5219196296.

The spelling of 16683397 in words is "sixteen million, six hundred eighty-three thousand, three hundred ninety-seven".