998520960 has 64 divisors (see below), whose sum is σ = 3182791680. Its totient is φ = 266271744.

The previous prime is 998520911. The next prime is 998520983. The reversal of 998520960 is 69025899.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 258112 + ... + 261951.

It is an arithmetic number, because the mean of its divisors is an integer number (49731120).

Almost surely, 2^998520960 is an apocalyptic number.

It is an amenable number.

998520960 is an abundant number, since it is smaller than the sum of its proper divisors (2184270720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998520960 is a wasteful number, since it uses less digits than its factorization.

998520960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520085 (or 520073 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 998520960 is about 31599.3822724432. The cubic root of 998520960 is about 999.5067434046.

The spelling of 998520960 in words is "nine hundred ninety-eight million, five hundred twenty thousand, nine hundred sixty".