198987063 has 32 divisors (see below), whose sum is σ = 301480704. Its totient is φ = 115680000.

The previous prime is 198987043. The next prime is 198987077. The reversal of 198987063 is 360789891.

It is not a de Polignac number, because 198987063 - 2⁸ = 198986807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198986997 and 198987015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198987043) by changing a digit.

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, 81328 + ... + 83738.

It is an arithmetic number, because the mean of its divisors is an integer number (9421272).

Almost surely, 2^198987063 is an apocalyptic number.

198987063 is a deficient number, since it is larger than the sum of its proper divisors (102493641).

198987063 is a wasteful number, since it uses less digits than its factorization.

198987063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 198987063 is about 14106.2774324058. The cubic root of 198987063 is about 583.8145942610.

The spelling of 198987063 in words is "one hundred ninety-eight million, nine hundred eighty-seven thousand, sixty-three".