7221086 has 4 divisors (see below), whose sum is σ = 10831632. Its totient is φ = 3610542.

The previous prime is 7221079. The next prime is 7221089. The reversal of 7221086 is 6801227.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805270 + ... + 1805273.

It is an arithmetic number, because the mean of its divisors is an integer number (2707908).

Almost surely, 2^7221086 is an apocalyptic number.

7221086 is a deficient number, since it is larger than the sum of its proper divisors (3610546).

7221086 is a wasteful number, since it uses less digits than its factorization.

7221086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610545.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 7221086 is about 2687.2078445852. The cubic root of 7221086 is about 193.2861960654.

The spelling of 7221086 in words is "seven million, two hundred twenty-one thousand, eighty-six".