8220843 has 12 divisors (see below), whose sum is σ = 12573288. Its totient is φ = 5158080.

The previous prime is 8220803. The next prime is 8220851. The reversal of 8220843 is 3480228.

It is not a de Polignac number, because 8220843 - 2¹⁰ = 8219819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8220803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26713 + ... + 27018.

It is an arithmetic number, because the mean of its divisors is an integer number (1047774).

Almost surely, 2^8220843 is an apocalyptic number.

8220843 is a deficient number, since it is larger than the sum of its proper divisors (4352445).

8220843 is a wasteful number, since it uses less digits than its factorization.

8220843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53754 (or 53751 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 8220843 is about 2867.2012486046. The cubic root of 8220843 is about 201.8236787688.

The spelling of 8220843 in words is "eight million, two hundred twenty thousand, eight hundred forty-three".