998013 has 8 divisors (see below), whose sum is σ = 1400800. Its totient is φ = 630288.

The previous prime is 998009. The next prime is 998017. The reversal of 998013 is 310899.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (998009) and next prime (998017).

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

It is not a de Polignac number, because 998013 - 2² = 998009 is a prime.

It is a Duffinian number.

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 998013.

It is not an unprimeable number, because it can be changed into a prime (998017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8698 + ... + 8811.

It is an arithmetic number, because the mean of its divisors is an integer number (175100).

2⁹⁹⁸⁰¹³ is an apocalyptic number.

It is an amenable number.

998013 is a deficient number, since it is larger than the sum of its proper divisors (402787).

998013 is a wasteful number, since it uses less digits than its factorization.

998013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17531.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 998013 is about 999.0060059880. The cubic root of 998013 is about 99.9337227496.

The spelling of 998013 in words is "nine hundred ninety-eight thousand, thirteen".