8220873 has 4 divisors (see below), whose sum is σ = 10961168. Its totient is φ = 5480580.

The previous prime is 8220853. The next prime is 8220881. The reversal of 8220873 is 3780228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8220873 - 2¹² = 8216777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8220873.

It is not an unprimeable number, because it can be changed into a prime (8220803) 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 3 ways as a sum of consecutive naturals, for example, 1370143 + ... + 1370148.

It is an arithmetic number, because the mean of its divisors is an integer number (2740292).

Almost surely, 2^8220873 is an apocalyptic number.

It is an amenable number.

8220873 is a deficient number, since it is larger than the sum of its proper divisors (2740295).

8220873 is a wasteful number, since it uses less digits than its factorization.

8220873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740294.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 8220873 is about 2867.2064801824. The cubic root of 8220873 is about 201.8239242709.

The spelling of 8220873 in words is "eight million, two hundred twenty thousand, eight hundred seventy-three".