84805 has 8 divisors (see below), whose sum is σ = 116352. Its totient is φ = 58128.

The previous prime is 84793. The next prime is 84809. The reversal of 84805 is 50848.

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

It is not a de Polignac number, because 84805 - 2¹¹ = 82757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84805.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 84805.

It is not an unprimeable number, because it can be changed into a prime (84809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1177 + ... + 1246.

It is an arithmetic number, because the mean of its divisors is an integer number (14544).

2⁸⁴⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

84805 is a deficient number, since it is larger than the sum of its proper divisors (31547).

84805 is a wasteful number, since it uses less digits than its factorization.

84805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 84805 is about 291.2129804799. The cubic root of 84805 is about 43.9346481621.

The spelling of 84805 in words is "eighty-four thousand, eight hundred five".