840168 has 48 divisors (see below), whose sum is σ = 2602080. Its totient is φ = 239904.

The previous prime is 840163. The next prime is 840179. The reversal of 840168 is 861048.

840168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (840163) by changing a digit.

840168 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 11 ways as a sum of consecutive naturals, for example, 330 + ... + 1337.

It is an arithmetic number, because the mean of its divisors is an integer number (54210).

2⁸⁴⁰¹⁶⁸ is an apocalyptic number.

It is an amenable number.

840168 is an abundant number, since it is smaller than the sum of its proper divisors (1761912).

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

840168 is a wasteful number, since it uses less digits than its factorization.

840168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 840168 is about 916.6067859229. The cubic root of 840168 is about 94.3601694457.

The spelling of 840168 in words is "eight hundred forty thousand, one hundred sixty-eight".