168220 has 24 divisors (see below), whose sum is σ = 381024. Its totient is φ = 62016.

The previous prime is 168211. The next prime is 168227. The reversal of 168220 is 22861.

It is a happy number.

It is a plaindrome in base 6.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168227) by changing a digit.

168220 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 (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64 + ... + 583.

It is an arithmetic number, because the mean of its divisors is an integer number (15876).

2¹⁶⁸²²⁰ is an apocalyptic number.

168220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168220 is an abundant number, since it is smaller than the sum of its proper divisors (212804).

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

168220 is a wasteful number, since it uses less digits than its factorization.

168220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 168220 is about 410.1463153559. The cubic root of 168220 is about 55.2025588676.

The spelling of 168220 in words is "one hundred sixty-eight thousand, two hundred twenty".