218265 has 8 divisors (see below), whose sum is σ = 349248. Its totient is φ = 116400.

The previous prime is 218249. The next prime is 218279. The reversal of 218265 is 562812.

218265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 218265 - 2⁴ = 218249 is a prime.

It is a super-2 number, since 2×218265² = 95279220450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

218265 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7261 + ... + 7290.

It is an arithmetic number, because the mean of its divisors is an integer number (43656).

2²¹⁸²⁶⁵ is an apocalyptic number.

It is an amenable number.

218265 is a deficient number, since it is larger than the sum of its proper divisors (130983).

218265 is a wasteful number, since it uses less digits than its factorization.

218265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14559.

The product of its digits is 960, while the sum is 24.

The square root of 218265 is about 467.1883988286. The cubic root of 218265 is about 60.2089934063.

The spelling of 218265 in words is "two hundred eighteen thousand, two hundred sixty-five".