998713 has 4 divisors (see below), whose sum is σ = 1012468. Its totient is φ = 984960.

The previous prime is 998689. The next prime is 998717. The reversal of 998713 is 317899.

998713 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 317899 = 43 ⋅7393.

It can be written as a sum of positive squares in 2 ways, for example, as 779689 + 219024 = 883^2 + 468^2 .

It is a cyclic number.

It is not a de Polignac number, because 998713 - 2⁵ = 998681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998717) 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 3 ways as a sum of consecutive naturals, for example, 6768 + ... + 6913.

It is an arithmetic number, because the mean of its divisors is an integer number (253117).

2⁹⁹⁸⁷¹³ is an apocalyptic number.

It is an amenable number.

998713 is a deficient number, since it is larger than the sum of its proper divisors (13755).

998713 is a wasteful number, since it uses less digits than its factorization.

998713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13754.

The product of its digits is 13608, while the sum is 37.

The square root of 998713 is about 999.3562928205. The cubic root of 998713 is about 99.9570815827.

It can be divided in two parts, 9987 and 13, that added together give a 4-th power (10000 = 10⁴).

The spelling of 998713 in words is "nine hundred ninety-eight thousand, seven hundred thirteen".