998562 has 16 divisors (see below), whose sum is σ = 2040192. Its totient is φ = 325680.

The previous prime is 998561. The next prime is 998617. The reversal of 998562 is 265899.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 998562.

It is not an unprimeable number, because it can be changed into a prime (998561) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1489 + ... + 2052.

It is an arithmetic number, because the mean of its divisors is an integer number (127512).

2⁹⁹⁸⁵⁶² is an apocalyptic number.

998562 is an abundant number, since it is smaller than the sum of its proper divisors (1041630).

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

998562 is a wasteful number, since it uses less digits than its factorization.

998562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593.

The product of its digits is 38880, while the sum is 39.

The square root of 998562 is about 999.2807413335. The cubic root of 998562 is about 99.9520436722.

The spelling of 998562 in words is "nine hundred ninety-eight thousand, five hundred sixty-two".