9998573 has 8 divisors (see below), whose sum is σ = 10794168. Its totient is φ = 9206784.

The previous prime is 9998561. The next prime is 9998581. The reversal of 9998573 is 3758999.

It can be written as a sum of positive squares in 4 ways, for example, as 3378244 + 6620329 = 1838^2 + 2573^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9998573 - 2⁴ = 9998557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998543) 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, 7061 + ... + 8357.

It is an arithmetic number, because the mean of its divisors is an integer number (1349271).

Almost surely, 2^9998573 is an apocalyptic number.

It is an amenable number.

9998573 is a deficient number, since it is larger than the sum of its proper divisors (795595).

9998573 is a wasteful number, since it uses less digits than its factorization.

9998573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903.

The product of its digits is 612360, while the sum is 50.

The square root of 9998573 is about 3162.0520236075. The cubic root of 9998573 is about 215.4332205880.

The spelling of 9998573 in words is "nine million, nine hundred ninety-eight thousand, five hundred seventy-three".