198699663 has 16 divisors (see below), whose sum is σ = 279200000. Its totient is φ = 125349120.

The previous prime is 198699643. The next prime is 198699667. The reversal of 198699663 is 366996891.

It is not a de Polignac number, because 198699663 - 2¹⁴ = 198683279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198699667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69798 + ... + 72588.

It is an arithmetic number, because the mean of its divisors is an integer number (17450000).

Almost surely, 2^198699663 is an apocalyptic number.

198699663 is a deficient number, since it is larger than the sum of its proper divisors (80500337).

198699663 is a wasteful number, since it uses less digits than its factorization.

198699663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4062.

The product of its digits is 3779136, while the sum is 57.

The square root of 198699663 is about 14096.0867974059. The cubic root of 198699663 is about 583.5333881088.

The spelling of 198699663 in words is "one hundred ninety-eight million, six hundred ninety-nine thousand, six hundred sixty-three".