7220689 has 24 divisors (see below), whose sum is σ = 9028800. Its totient is φ = 5743584.

The previous prime is 7220677. The next prime is 7220693. The reversal of 7220689 is 9860227.

It is not a de Polignac number, because 7220689 - 2⁹ = 7220177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7220089) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 48387 + ... + 48535.

It is an arithmetic number, because the mean of its divisors is an integer number (376200).

Almost surely, 2^7220689 is an apocalyptic number.

It is an amenable number.

7220689 is a deficient number, since it is larger than the sum of its proper divisors (1808111).

7220689 is a wasteful number, since it uses less digits than its factorization.

7220689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 7220689 is about 2687.1339750746. The cubic root of 7220689 is about 193.2826538454.

The spelling of 7220689 in words is "seven million, two hundred twenty thousand, six hundred eighty-nine".