16847 has 4 divisors (see below), whose sum is σ = 17856. Its totient is φ = 15840.

The previous prime is 16843. The next prime is 16871. The reversal of 16847 is 74861.

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

It is a cyclic number.

It is not a de Polignac number, because 16847 - 2² = 16843 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479 + ... + 512.

It is an arithmetic number, because the mean of its divisors is an integer number (4464).

2¹⁶⁸⁴⁷ is an apocalyptic number.

16847 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16847 is a deficient number, since it is larger than the sum of its proper divisors (1009).

16847 is an equidigital number, since it uses as much as digits as its factorization.

16847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008.

The product of its digits is 1344, while the sum is 26.

The square root of 16847 is about 129.7959937748. The cubic root of 16847 is about 25.6354448795.

The spelling of 16847 in words is "sixteen thousand, eight hundred forty-seven".