16897 has 4 divisors (see below), whose sum is σ = 17236. Its totient is φ = 16560.

The previous prime is 16889. The next prime is 16901. The reversal of 16897 is 79861.

16897 is an esthetic number in base 6, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1521 + 15376 = 39^2 + 124^2 .

It is a cyclic number.

It is not a de Polignac number, because 16897 - 2³ = 16889 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (16097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78 + ... + 199.

It is an arithmetic number, because the mean of its divisors is an integer number (4309).

It is a Proth number, since it is equal to 33 ⋅ 2⁹ + 1 and 33 < 2⁹.

2¹⁶⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

16897 is a deficient number, since it is larger than the sum of its proper divisors (339).

16897 is an equidigital number, since it uses as much as digits as its factorization.

16897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338.

The product of its digits is 3024, while the sum is 31.

The square root of 16897 is about 129.9884610264. The cubic root of 16897 is about 25.6607808696.

The spelling of 16897 in words is "sixteen thousand, eight hundred ninety-seven".