84855 has 8 divisors (see below), whose sum is σ = 135792. Its totient is φ = 45248.

The previous prime is 84827. The next prime is 84857. The reversal of 84855 is 55848.

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 84855 - 2¹⁶ = 19319 is a prime.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2814 + ... + 2843.

It is an arithmetic number, because the mean of its divisors is an integer number (16974).

2⁸⁴⁸⁵⁵ is an apocalyptic number.

84855 is a deficient number, since it is larger than the sum of its proper divisors (50937).

84855 is a wasteful number, since it uses less digits than its factorization.

84855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5665.

The product of its digits is 6400, while the sum is 30.

The square root of 84855 is about 291.2988156516. The cubic root of 84855 is about 43.9432809110.

It can be divided in two parts, 848 and 55, that added together give a triangular number (903 = T₄₂).

The spelling of 84855 in words is "eighty-four thousand, eight hundred fifty-five".