199556 has 12 divisors (see below), whose sum is σ = 399168. Its totient is φ = 85512.

The previous prime is 199523. The next prime is 199559. The reversal of 199556 is 655991.

199556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

199556 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199559) by changing a digit.

199556 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3536 + ... + 3591.

It is an arithmetic number, because the mean of its divisors is an integer number (33264).

2¹⁹⁹⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

199556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199556 is a wasteful number, since it uses less digits than its factorization.

199556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7138 (or 7136 counting only the distinct ones).

The product of its digits is 12150, while the sum is 35.

The square root of 199556 is about 446.7169125968. The cubic root of 199556 is about 58.4370472383.

The spelling of 199556 in words is "one hundred ninety-nine thousand, five hundred fifty-six".