84618 has 16 divisors (see below), whose sum is σ = 188160. Its totient is φ = 28188.

The previous prime is 84589. The next prime is 84629. The reversal of 84618 is 81648.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 84591 and 84600.

It is an unprimeable number.

84618 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, 730 + ... + 837.

It is an arithmetic number, because the mean of its divisors is an integer number (11760).

2⁸⁴⁶¹⁸ is an apocalyptic number.

84618 is an abundant number, since it is smaller than the sum of its proper divisors (103542).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94080).

84618 is a wasteful number, since it uses less digits than its factorization.

84618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578 (or 1572 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 84618 is about 290.8917324367. The cubic root of 84618 is about 43.9023315716.

The spelling of 84618 in words is "eighty-four thousand, six hundred eighteen".