8220574 has 8 divisors (see below), whose sum is σ = 12469680. Its totient is φ = 4064016.

The previous prime is 8220557. The next prime is 8220577. The reversal of 8220574 is 4750228.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8220577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22914 + ... + 23269.

It is an arithmetic number, because the mean of its divisors is an integer number (1558710).

Almost surely, 2^8220574 is an apocalyptic number.

8220574 is a deficient number, since it is larger than the sum of its proper divisors (4249106).

8220574 is a wasteful number, since it uses less digits than its factorization.

8220574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46274.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 8220574 is about 2867.1543383641. The cubic root of 8220574 is about 201.8214774064.

The spelling of 8220574 in words is "eight million, two hundred twenty thousand, five hundred seventy-four".