998548564 has 48 divisors (see below), whose sum is σ = 1960752640. Its totient is φ = 441832320.

The previous prime is 998548559. The next prime is 998548687. The reversal of 998548564 is 465845899.

It is a junction number, because it is equal to n+sod(n) for n = 998548499 and 998548508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172867 + ... + 178549.

Almost surely, 2^998548564 is an apocalyptic number.

It is an amenable number.

998548564 is a deficient number, since it is larger than the sum of its proper divisors (962204076).

998548564 is a wasteful number, since it uses less digits than its factorization.

998548564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840 (or 5838 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 58.

The square root of 998548564 is about 31599.8190501148. The cubic root of 998548564 is about 999.5159537370.

The spelling of 998548564 in words is "nine hundred ninety-eight million, five hundred forty-eight thousand, five hundred sixty-four".