168213 has 8 divisors (see below), whose sum is σ = 229248. Its totient is φ = 109664.

The previous prime is 168211. The next prime is 168227. The reversal of 168213 is 312861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168213 - 2¹ = 168211 is a prime.

It is a super-2 number, since 2×168213² = 56591226738, which contains 22 as substring.

It is a zygodrome in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 168213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168211) by changing a digit.

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, 456 + ... + 737.

It is an arithmetic number, because the mean of its divisors is an integer number (28656).

2¹⁶⁸²¹³ is an apocalyptic number.

It is an amenable number.

168213 is a deficient number, since it is larger than the sum of its proper divisors (61035).

168213 is a wasteful number, since it uses less digits than its factorization.

168213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243.

The product of its digits is 288, while the sum is 21.

The square root of 168213 is about 410.1377817271. The cubic root of 168213 is about 55.2017931575.

The spelling of 168213 in words is "one hundred sixty-eight thousand, two hundred thirteen".