998606 has 8 divisors (see below), whose sum is σ = 1711920. Its totient is φ = 427968.

The previous prime is 998561. The next prime is 998617. The reversal of 998606 is 606899.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 998606.

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 998606.

It is an unprimeable number.

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, 35651 + ... + 35678.

It is an arithmetic number, because the mean of its divisors is an integer number (213990).

2⁹⁹⁸⁶⁰⁶ is an apocalyptic number.

998606 is a deficient number, since it is larger than the sum of its proper divisors (713314).

998606 is a wasteful number, since it uses less digits than its factorization.

998606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71338.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 998606 is about 999.3027569260. The cubic root of 998606 is about 99.9535117251.

The spelling of 998606 in words is "nine hundred ninety-eight thousand, six hundred six".