198563616 has 48 divisors (see below), whose sum is σ = 579146400. Its totient is φ = 66187584.

The previous prime is 198563591. The next prime is 198563627. The reversal of 198563616 is 616365891.

198563616 is a `hidden beast` number, since 1 + 9 + 8 + 5 + 636 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

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, 114046 + ... + 115773.

It is an arithmetic number, because the mean of its divisors is an integer number (12065550).

Almost surely, 2^198563616 is an apocalyptic number.

198563616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

198563616 is an abundant number, since it is smaller than the sum of its proper divisors (380582784).

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

198563616 is a wasteful number, since it uses less digits than its factorization.

198563616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229838 (or 229824 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 198563616 is about 14091.2602701107. The cubic root of 198563616 is about 583.4001785348.

The spelling of 198563616 in words is "one hundred ninety-eight million, five hundred sixty-three thousand, six hundred sixteen".