998563268 has 12 divisors (see below), whose sum is σ = 1767121020. Its totient is φ = 493671552.

The previous prime is 998563249. The next prime is 998563309. The reversal of 998563268 is 862365899.

It can be written as a sum of positive squares in 2 ways, for example, as 236913664 + 761649604 = 15392^2 + 27598^2 .

It is a super-3 number, since 3×998563268³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1402121 + ... + 1402832.

It is an arithmetic number, because the mean of its divisors is an integer number (147260085).

Almost surely, 2^998563268 is an apocalyptic number.

It is an amenable number.

998563268 is a deficient number, since it is larger than the sum of its proper divisors (768557752).

998563268 is a wasteful number, since it uses less digits than its factorization.

998563268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805046 (or 2805044 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 56.

The square root of 998563268 is about 31600.0517088185. The cubic root of 998563268 is about 999.5208597947.

The spelling of 998563268 in words is "nine hundred ninety-eight million, five hundred sixty-three thousand, two hundred sixty-eight".