8208205 has 4 divisors (see below), whose sum is σ = 9849852. Its totient is φ = 6566560.

The previous prime is 8208199. The next prime is 8208251. The reversal of 8208205 is 5028028.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3319684 + 4888521 = 1822^2 + 2211^2 .

It is not a de Polignac number, because 8208205 - 2³ = 8208197 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 8208205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820816 + ... + 820825.

It is an arithmetic number, because the mean of its divisors is an integer number (2462463).

Almost surely, 2^8208205 is an apocalyptic number.

It is an amenable number.

8208205 is a deficient number, since it is larger than the sum of its proper divisors (1641647).

8208205 is a wasteful number, since it uses less digits than its factorization.

8208205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641646.

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

The square root of 8208205 is about 2864.9965095965. The cubic root of 8208205 is about 201.7202037433.

It can be divided in two parts, 820 and 8205, that added together give a square (9025 = 95²).

The spelling of 8208205 in words is "eight million, two hundred eight thousand, two hundred five".