998608 has 20 divisors (see below), whose sum is σ = 2084068. Its totient is φ = 460800.

The previous prime is 998561. The next prime is 998617. The reversal of 998608 is 806899.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 345744 + 652864 = 588^2 + 808^2 .

It is a congruent number.

It is an unprimeable number.

998608 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2193 + ... + 2608.

2⁹⁹⁸⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

998608 is an abundant number, since it is smaller than the sum of its proper divisors (1085460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998608 is a wasteful number, since it uses less digits than its factorization.

998608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822 (or 4816 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 998608 is about 999.3037576233. The cubic root of 998608 is about 99.9535784537.

The spelling of 998608 in words is "nine hundred ninety-eight thousand, six hundred eight".