998835 has 16 divisors (see below), whose sum is σ = 1692576. Its totient is φ = 501248.

The previous prime is 998831. The next prime is 998839. The reversal of 998835 is 538899.

It is an interprime number because it is at equal distance from previous prime (998831) and next prime (998839).

It is a cyclic number.

It is not a de Polignac number, because 998835 - 2² = 998831 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1704 + ... + 2213.

It is an arithmetic number, because the mean of its divisors is an integer number (105786).

2⁹⁹⁸⁸³⁵ is an apocalyptic number.

998835 is a deficient number, since it is larger than the sum of its proper divisors (693741).

998835 is a wasteful number, since it uses less digits than its factorization.

998835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942.

The product of its digits is 77760, while the sum is 42.

The square root of 998835 is about 999.4173302480. The cubic root of 998835 is about 99.9611515766.

The spelling of 998835 in words is "nine hundred ninety-eight thousand, eight hundred thirty-five".