16868 has 6 divisors (see below), whose sum is σ = 29526. Its totient is φ = 8432.

The previous prime is 16843. The next prime is 16871. The reversal of 16868 is 86861.

It can be written as a sum of positive squares in only one way, i.e., 16384 + 484 = 128^2 + 22^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16868.

It is an unprimeable number.

16868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2105 + ... + 2112.

It is an arithmetic number, because the mean of its divisors is an integer number (4921).

2¹⁶⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

16868 is a deficient number, since it is larger than the sum of its proper divisors (12658).

16868 is a wasteful number, since it uses less digits than its factorization.

16868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4221 (or 4219 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 16868 is about 129.8768647604. The cubic root of 16868 is about 25.6460920929.

The spelling of 16868 in words is "sixteen thousand, eight hundred sixty-eight".