8820205 has 16 divisors (see below), whose sum is σ = 11145600. Its totient is φ = 6690880.

The previous prime is 8820193. The next prime is 8820221. The reversal of 8820205 is 5020288.

It is not a de Polignac number, because 8820205 - 2¹⁷ = 8689133 is a prime.

It is an Ulam number.

8820205 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8820205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8040 + ... + 9070.

It is an arithmetic number, because the mean of its divisors is an integer number (696600).

Almost surely, 2^8820205 is an apocalyptic number.

It is an amenable number.

8820205 is a deficient number, since it is larger than the sum of its proper divisors (2325395).

8820205 is a wasteful number, since it uses less digits than its factorization.

8820205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124.

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

The square root of 8820205 is about 2969.8829943282. The cubic root of 8820205 is about 206.6139115548.

It can be divided in two parts, 8820 and 205, that added together give a square (9025 = 95²).

The spelling of 8820205 in words is "eight million, eight hundred twenty thousand, two hundred five".