7220885 has 12 divisors (see below), whose sum is σ = 10080108. Its totient is φ = 4951296.

The previous prime is 7220867. The next prime is 7220891. The reversal of 7220885 is 5880227.

It can be written as a sum of positive squares in 2 ways, for example, as 2140369 + 5080516 = 1463^2 + 2254^2 .

It is not a de Polignac number, because 7220885 - 2⁶ = 7220821 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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14492 + ... + 14981.

It is an arithmetic number, because the mean of its divisors is an integer number (840009).

Almost surely, 2^7220885 is an apocalyptic number.

It is an amenable number.

7220885 is a deficient number, since it is larger than the sum of its proper divisors (2859223).

7220885 is a wasteful number, since it uses less digits than its factorization.

7220885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29492 (or 29485 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 7220885 is about 2687.1704449104. The cubic root of 7220885 is about 193.2844026654.

The spelling of 7220885 in words is "seven million, two hundred twenty thousand, eight hundred eighty-five".