7222205 has 4 divisors (see below), whose sum is σ = 8666652. Its totient is φ = 5777760.

The previous prime is 7222199. The next prime is 7222219. The reversal of 7222205 is 5022227.

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 3003289 + 4218916 = 1733^2 + 2054^2 .

It is not a de Polignac number, because 7222205 - 2²² = 3027901 is a prime.

It is an Ulam number.

It is a Duffinian number.

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, 722216 + ... + 722225.

It is an arithmetic number, because the mean of its divisors is an integer number (2166663).

Almost surely, 2^7222205 is an apocalyptic number.

It is an amenable number.

7222205 is a deficient number, since it is larger than the sum of its proper divisors (1444447).

7222205 is a wasteful number, since it uses less digits than its factorization.

7222205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444446.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 7222205 is about 2687.4160452003. The cubic root of 7222205 is about 193.2961796090.

The spelling of 7222205 in words is "seven million, two hundred twenty-two thousand, two hundred five".