998163 has 10 divisors (see below), whose sum is σ = 1491204. Its totient is φ = 665388.

The previous prime is 998161. The next prime is 998167. The reversal of 998163 is 361899.

It is not a de Polignac number, because 998163 - 2¹ = 998161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998161) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6081 + ... + 6242.

2⁹⁹⁸¹⁶³ is an apocalyptic number.

998163 is a deficient number, since it is larger than the sum of its proper divisors (493041).

998163 is a wasteful number, since it uses less digits than its factorization.

998163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12335 (or 12326 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 998163 is about 999.0810777910. The cubic root of 998163 is about 99.9387291331.

The spelling of 998163 in words is "nine hundred ninety-eight thousand, one hundred sixty-three".