855218 has 32 divisors (see below), whose sum is σ = 1634304. Its totient is φ = 326592.

The previous prime is 855203. The next prime is 855221. The reversal of 855218 is 812558.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 855218.

It is an unprimeable number.

855218 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 15 ways as a sum of consecutive naturals, for example, 6671 + ... + 6797.

It is an arithmetic number, because the mean of its divisors is an integer number (51072).

2⁸⁵⁵²¹⁸ is an apocalyptic number.

855218 is a deficient number, since it is larger than the sum of its proper divisors (779086).

855218 is a wasteful number, since it uses less digits than its factorization.

855218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186.

The product of its digits is 3200, while the sum is 29.

The square root of 855218 is about 924.7799738316. The cubic root of 855218 is about 94.9202655067.

The spelling of 855218 in words is "eight hundred fifty-five thousand, two hundred eighteen".