998056 has 16 divisors (see below), whose sum is σ = 1898100. Its totient is φ = 491904.

The previous prime is 998029. The next prime is 998069. The reversal of 998056 is 650899.

It can be written as a sum of positive squares in 2 ways, for example, as 980100 + 17956 = 990^2 + 134^2 .

It is a super-2 number, since 2×998056² = 1992231558272, which contains 22 as substring.

It is an unprimeable number.

998056 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 271 + ... + 1438.

2⁹⁹⁸⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

998056 is a deficient number, since it is larger than the sum of its proper divisors (900044).

998056 is a wasteful number, since it uses less digits than its factorization.

998056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788 (or 1784 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 998056 is about 999.0275271483. The cubic root of 998056 is about 99.9351579642.

The spelling of 998056 in words is "nine hundred ninety-eight thousand, fifty-six".