198824987 has 8 divisors (see below), whose sum is σ = 210216000. Its totient is φ = 187526664.

The previous prime is 198824981. The next prime is 198825001. The reversal of 198824987 is 789428891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198824987 - 2⁴ = 198824971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198824981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18737 + ... + 27362.

It is an arithmetic number, because the mean of its divisors is an integer number (26277000).

Almost surely, 2^198824987 is an apocalyptic number.

198824987 is a deficient number, since it is larger than the sum of its proper divisors (11391013).

198824987 is a wasteful number, since it uses less digits than its factorization.

198824987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46345.

The product of its digits is 2322432, while the sum is 56.

The square root of 198824987 is about 14100.5314438854. The cubic root of 198824987 is about 583.6560445300.

The spelling of 198824987 in words is "one hundred ninety-eight million, eight hundred twenty-four thousand, nine hundred eighty-seven".