998996 has 6 divisors (see below), whose sum is σ = 1748250. Its totient is φ = 499496.

The previous prime is 998989. The next prime is 999007. The reversal of 998996 is 699899.

It can be written as a sum of positive squares in only one way, i.e., 662596 + 336400 = 814^2 + 580^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998996.

It is an unprimeable number.

998996 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124871 + ... + 124878.

It is an arithmetic number, because the mean of its divisors is an integer number (291375).

2⁹⁹⁸⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

998996 is a deficient number, since it is larger than the sum of its proper divisors (749254).

998996 is a wasteful number, since it uses less digits than its factorization.

998996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249753 (or 249751 counting only the distinct ones).

The product of its digits is 314928, while the sum is 50.

The square root of 998996 is about 999.4978739347. The cubic root of 998996 is about 99.9665221269.

The spelling of 998996 in words is "nine hundred ninety-eight thousand, nine hundred ninety-six".