163868 has 12 divisors (see below), whose sum is σ = 291312. Its totient is φ = 80640.

The previous prime is 163861. The next prime is 163871. The reversal of 163868 is 868361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163861) by changing a digit.

163868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5 + ... + 572.

It is an arithmetic number, because the mean of its divisors is an integer number (24276).

2¹⁶³⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

163868 is a deficient number, since it is larger than the sum of its proper divisors (127444).

163868 is a wasteful number, since it uses less digits than its factorization.

163868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 650 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 163868 is about 404.8061264359. The cubic root of 163868 is about 54.7223472598.

The spelling of 163868 in words is "one hundred sixty-three thousand, eight hundred sixty-eight".