2198556 has 24 divisors (see below), whose sum is σ = 5700240. Its totient is φ = 732816.

The previous prime is 2198533. The next prime is 2198569. The reversal of 2198556 is 6558912.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2198556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10071 + ... + 10286.

It is an arithmetic number, because the mean of its divisors is an integer number (237510).

2^2198556 is an apocalyptic number.

It is an amenable number.

2198556 is an abundant number, since it is smaller than the sum of its proper divisors (3501684).

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

2198556 is a wasteful number, since it uses less digits than its factorization.

2198556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20370 (or 20362 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 2198556 is about 1482.7528452173. The cubic root of 2198556 is about 130.0306830928.

The spelling of 2198556 in words is "two million, one hundred ninety-eight thousand, five hundred fifty-six".