16803 has 6 divisors (see below), whose sum is σ = 24284. Its totient is φ = 11196.

The previous prime is 16787. The next prime is 16811. The reversal of 16803 is 30861.

It is not a de Polignac number, because 16803 - 2⁴ = 16787 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7 and base 12.

It is not an unprimeable number, because it can be changed into a prime (16823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 925 + ... + 942.

2¹⁶⁸⁰³ is an apocalyptic number.

16803 is a deficient number, since it is larger than the sum of its proper divisors (7481).

16803 is a wasteful number, since it uses less digits than its factorization.

16803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873 (or 1870 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 16803 is about 129.6263862028. The cubic root of 16803 is about 25.6131077080.

The spelling of 16803 in words is "sixteen thousand, eight hundred three".