9898686 has 120 divisors (see below), whose sum is σ = 27312120. Its totient is φ = 2667168.

The previous prime is 9898673. The next prime is 9898697. The reversal of 9898686 is 6868989.

It is a Harshad number since it is a multiple of its sum of digits (54).

9898686 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 230181 + ... + 230223.

It is an arithmetic number, because the mean of its divisors is an integer number (227601).

Almost surely, 2^9898686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9898686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13656060).

9898686 is an abundant number, since it is smaller than the sum of its proper divisors (17413434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9898686 is a wasteful number, since it uses less digits than its factorization.

9898686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100 (or 84 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 9898686 is about 3146.2177292743. The cubic root of 9898686 is about 214.7134166192.

The spelling of 9898686 in words is "nine million, eight hundred ninety-eight thousand, six hundred eighty-six".