168816 has 20 divisors (see below), whose sum is σ = 436232. Its totient is φ = 56256.

The previous prime is 168803. The next prime is 168851. The reversal of 168816 is 618861.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

168816 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 in 3 ways as a sum of consecutive naturals, for example, 1711 + ... + 1806.

2¹⁶⁸⁸¹⁶ is an apocalyptic number.

168816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

168816 is an abundant number, since it is smaller than the sum of its proper divisors (267416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168816 is a wasteful number, since it uses less digits than its factorization.

168816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528 (or 3522 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 168816 is about 410.8722429174. The cubic root of 168816 is about 55.2676758688.

The spelling of 168816 in words is "one hundred sixty-eight thousand, eight hundred sixteen".