998087 has 4 divisors (see below), whose sum is σ = 1056816. Its totient is φ = 939360.

The previous prime is 998083. The next prime is 998111. The reversal of 998087 is 780899.

998087 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 998087 - 2² = 998083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998083) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 29339 + ... + 29372.

It is an arithmetic number, because the mean of its divisors is an integer number (264204).

2⁹⁹⁸⁰⁸⁷ is an apocalyptic number.

998087 is a deficient number, since it is larger than the sum of its proper divisors (58729).

998087 is a wasteful number, since it uses less digits than its factorization.

998087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58728.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 998087 is about 999.0430421158. The cubic root of 998087 is about 99.9361926282.

The spelling of 998087 in words is "nine hundred ninety-eight thousand, eighty-seven".