8220998 has 16 divisors (see below), whose sum is σ = 12748560. Its totient is φ = 3973536.

The previous prime is 8220937. The next prime is 8221009. The reversal of 8220998 is 8990228.

It is a congruent number.

It is an unprimeable number.

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, 8936 + ... + 9812.

It is an arithmetic number, because the mean of its divisors is an integer number (796785).

Almost surely, 2^8220998 is an apocalyptic number.

8220998 is a deficient number, since it is larger than the sum of its proper divisors (4527562).

8220998 is a wasteful number, since it uses less digits than its factorization.

8220998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 8220998 is about 2867.2282783204. The cubic root of 8220998 is about 201.8249471899.

The spelling of 8220998 in words is "eight million, two hundred twenty thousand, nine hundred ninety-eight".