998017 has 2 divisors, whose sum is σ = 998018. Its totient is φ = 998016.

The previous prime is 998009. The next prime is 998027. The reversal of 998017 is 710899.

998017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 998001 + 16 = 999^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 998017 - 2³ = 998009 is a prime.

998017 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (998027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499008 + 499009.

It is an arithmetic number, because the mean of its divisors is an integer number (499009).

2⁹⁹⁸⁰¹⁷ is an apocalyptic number.

It is an amenable number.

998017 is a deficient number, since it is larger than the sum of its proper divisors (1).

998017 is an equidigital number, since it uses as much as digits as its factorization.

998017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 998017 is about 999.0080079759. The cubic root of 998017 is about 99.9338562597.

The spelling of 998017 in words is "nine hundred ninety-eight thousand, seventeen".