198536562 has 64 divisors (see below), whose sum is σ = 505800960. Its totient is φ = 56547072.

The previous prime is 198536549. The next prime is 198536579. The reversal of 198536562 is 265635891.

198536562 is a `hidden beast` number, since 1 + 9 + 85 + 3 + 6 + 562 = 666.

198536562 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 163068 + ... + 164280.

It is an arithmetic number, because the mean of its divisors is an integer number (7903140).

Almost surely, 2^198536562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198536562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252900480).

198536562 is an abundant number, since it is smaller than the sum of its proper divisors (307264398).

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

198536562 is a wasteful number, since it uses less digits than its factorization.

198536562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664 (or 1658 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 198536562 is about 14090.3002806895. The cubic root of 198536562 is about 583.3736815266.

The spelling of 198536562 in words is "one hundred ninety-eight million, five hundred thirty-six thousand, five hundred sixty-two".