8722205 has 4 divisors (see below), whose sum is σ = 10466652. Its totient is φ = 6977760.

The previous prime is 8722193. The next prime is 8722211. The reversal of 8722205 is 5022278.

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 2199289 + 6522916 = 1483^2 + 2554^2 .

It is not a de Polignac number, because 8722205 - 2¹² = 8718109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872216 + ... + 872225.

It is an arithmetic number, because the mean of its divisors is an integer number (2616663).

Almost surely, 2^8722205 is an apocalyptic number.

It is an amenable number.

8722205 is a deficient number, since it is larger than the sum of its proper divisors (1744447).

8722205 is a wasteful number, since it uses less digits than its factorization.

8722205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744446.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 8722205 is about 2953.3379420581. The cubic root of 8722205 is about 205.8458409282.

The spelling of 8722205 in words is "eight million, seven hundred twenty-two thousand, two hundred five".