84818 has 4 divisors (see below), whose sum is σ = 127230. Its totient is φ = 42408.

The previous prime is 84811. The next prime is 84827. The reversal of 84818 is 81848.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 66049 + 18769 = 257^2 + 137^2 .

It is not an unprimeable number, because it can be changed into a prime (84811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21203 + ... + 21206.

2⁸⁴⁸¹⁸ is an apocalyptic number.

84818 is a deficient number, since it is larger than the sum of its proper divisors (42412).

84818 is a wasteful number, since it uses less digits than its factorization.

84818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42411.

The product of its digits is 2048, while the sum is 29.

The square root of 84818 is about 291.2353000582. The cubic root of 84818 is about 43.9368930031.

The spelling of 84818 in words is "eighty-four thousand, eight hundred eighteen".