998613 has 36 divisors (see below), whose sum is σ = 1825824. Its totient is φ = 514800.

The previous prime is 998561. The next prime is 998617. The reversal of 998613 is 316899.

It is not a de Polignac number, because 998613 - 2¹⁰ = 997589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998617) 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 35 ways as a sum of consecutive naturals, for example, 7558 + ... + 7688.

2⁹⁹⁸⁶¹³ is an apocalyptic number.

It is an amenable number.

998613 is a deficient number, since it is larger than the sum of its proper divisors (827211).

998613 is a wasteful number, since it uses less digits than its factorization.

998613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 152 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 998613 is about 999.3062593620. The cubic root of 998613 is about 99.9537452750.

It can be divided in two parts, 9986 and 13, that added together give a palindrome (9999).

The spelling of 998613 in words is "nine hundred ninety-eight thousand, six hundred thirteen".