998683 has 8 divisors (see below), whose sum is σ = 1191168. Its totient is φ = 818664.

The previous prime is 998681. The next prime is 998687. The reversal of 998683 is 386899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 998683 - 2¹ = 998681 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (998681) 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 7 ways as a sum of consecutive naturals, for example, 2941 + ... + 3262.

It is an arithmetic number, because the mean of its divisors is an integer number (148896).

2⁹⁹⁸⁶⁸³ is an apocalyptic number.

998683 is a deficient number, since it is larger than the sum of its proper divisors (192485).

998683 is a wasteful number, since it uses less digits than its factorization.

998683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6233.

The product of its digits is 93312, while the sum is 43.

The square root of 998683 is about 999.3412830460. The cubic root of 998683 is about 99.9560807138.

It can be divided in two parts, 998 and 683, that added together give a square (1681 = 41²).

The spelling of 998683 in words is "nine hundred ninety-eight thousand, six hundred eighty-three".