8220475 has 12 divisors (see below), whose sum is σ = 10470064. Its totient is φ = 6397920.

The previous prime is 8220461. The next prime is 8220481. The reversal of 8220475 is 5740228.

It is not a de Polignac number, because 8220475 - 2¹³ = 8212283 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3519 + ... + 5368.

Almost surely, 2^8220475 is an apocalyptic number.

8220475 is a deficient number, since it is larger than the sum of its proper divisors (2249589).

8220475 is a wasteful number, since it uses less digits than its factorization.

8220475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8934 (or 8929 counting only the distinct ones).

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

The square root of 8220475 is about 2867.1370738072. The cubic root of 8220475 is about 201.8206672276.

The spelling of 8220475 in words is "eight million, two hundred twenty thousand, four hundred seventy-five".