998960 has 20 divisors (see below), whose sum is σ = 2322768. Its totient is φ = 399552.

The previous prime is 998957. The next prime is 998969. The reversal of 998960 is 69899.

It is a tau number, because it is divible by the number of its divisors (20).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (998969) 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 in 3 ways as a sum of consecutive naturals, for example, 6164 + ... + 6323.

2⁹⁹⁸⁹⁶⁰ is an apocalyptic number.

It is an amenable number.

998960 is an abundant number, since it is smaller than the sum of its proper divisors (1323808).

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

998960 is a wasteful number, since it uses less digits than its factorization.

998960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12500 (or 12494 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 998960 is about 999.4798647297. The cubic root of 998960 is about 99.9653213086.

The spelling of 998960 in words is "nine hundred ninety-eight thousand, nine hundred sixty".