998164 has 6 divisors (see below), whose sum is σ = 1746794. Its totient is φ = 499080.

The previous prime is 998161. The next prime is 998167. The reversal of 998164 is 461899.

It is an interprime number because it is at equal distance from previous prime (998161) and next prime (998167).

It can be written as a sum of positive squares in only one way, i.e., 795664 + 202500 = 892^2 + 450^2 .

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124767 + ... + 124774.

2⁹⁹⁸¹⁶⁴ is an apocalyptic number.

It is an amenable number.

998164 is a deficient number, since it is larger than the sum of its proper divisors (748630).

998164 is a wasteful number, since it uses less digits than its factorization.

998164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249545 (or 249543 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The square root of 998164 is about 999.0815782507. The cubic root of 998164 is about 99.9387625073.

The spelling of 998164 in words is "nine hundred ninety-eight thousand, one hundred sixty-four".