8198556 has 24 divisors (see below), whose sum is σ = 20255760. Its totient is φ = 2572032.

The previous prime is 8198551. The next prime is 8198587. The reversal of 8198556 is 6558918.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8198551) 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 7 ways as a sum of consecutive naturals, for example, 19891 + ... + 20298.

It is an arithmetic number, because the mean of its divisors is an integer number (843990).

Almost surely, 2^8198556 is an apocalyptic number.

It is an amenable number.

8198556 is an abundant number, since it is smaller than the sum of its proper divisors (12057204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8198556 is a wasteful number, since it uses less digits than its factorization.

8198556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40213 (or 40211 counting only the distinct ones).

The product of its digits is 86400, while the sum is 42.

The square root of 8198556 is about 2863.3120682175. The cubic root of 8198556 is about 201.6411299617.

The spelling of 8198556 in words is "eight million, one hundred ninety-eight thousand, five hundred fifty-six".