198499560 has 128 divisors (see below), whose sum is σ = 690923520. Its totient is φ = 44681472.

The previous prime is 198499547. The next prime is 198499579. The reversal of 198499560 is 65994891.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54517 + ... + 58043.

It is an arithmetic number, because the mean of its divisors is an integer number (5397840).

Almost surely, 2^198499560 is an apocalyptic number.

198499560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198499560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345461760).

198499560 is an abundant number, since it is smaller than the sum of its proper divisors (492423960).

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

198499560 is a wasteful number, since it uses less digits than its factorization.

198499560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615 (or 3611 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 198499560 is about 14088.9871885810. The cubic root of 198499560 is about 583.3374374314.

The spelling of 198499560 in words is "one hundred ninety-eight million, four hundred ninety-nine thousand, five hundred sixty".