7220073 has 8 divisors (see below), whose sum is σ = 11002048. Its totient is φ = 4125744.

The previous prime is 7220033. The next prime is 7220089. The reversal of 7220073 is 3700227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7220073 - 2⁹ = 7219561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 343813 = 7220073 / (7 + 2 + 2 + 0 + 0 + 7 + 3).

It is a Duffinian number.

It is a Curzon number.

7220073 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7220033) 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 7 ways as a sum of consecutive naturals, for example, 171886 + ... + 171927.

It is an arithmetic number, because the mean of its divisors is an integer number (1375256).

Almost surely, 2^7220073 is an apocalyptic number.

It is an amenable number.

7220073 is a deficient number, since it is larger than the sum of its proper divisors (3781975).

7220073 is a wasteful number, since it uses less digits than its factorization.

7220073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343823.

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 7220073 is about 2687.0193523680. The cubic root of 7220073 is about 193.2771573477.

The spelling of 7220073 in words is "seven million, two hundred twenty thousand, seventy-three".