9998597 has 12 divisors (see below), whose sum is σ = 11682720. Its totient is φ = 8532216.

The previous prime is 9998587. The next prime is 9998603. The reversal of 9998597 is 7958999.

It is not a de Polignac number, because 9998597 - 2⁴ = 9998581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20288 + ... + 20774.

It is an arithmetic number, because the mean of its divisors is an integer number (973560).

Almost surely, 2^9998597 is an apocalyptic number.

It is an amenable number.

9998597 is a deficient number, since it is larger than the sum of its proper divisors (1684123).

9998597 is a wasteful number, since it uses less digits than its factorization.

9998597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 913 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 56.

The square root of 9998597 is about 3162.0558186092. The cubic root of 9998597 is about 215.4333929591.

The spelling of 9998597 in words is "nine million, nine hundred ninety-eight thousand, five hundred ninety-seven".