9998643468 has 96 divisors (see below), whose sum is σ = 25915341312. Its totient is φ = 2974809600.

The previous prime is 9998643451. The next prime is 9998643481. The reversal of 9998643468 is 8643468999.

9998643468 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 9998643399 and 9998643408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7672905 + ... + 7674207.

It is an arithmetic number, because the mean of its divisors is an integer number (269951472).

Almost surely, 2^9998643468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9998643468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12957670656).

9998643468 is an abundant number, since it is smaller than the sum of its proper divisors (15916697844).

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

9998643468 is a wasteful number, since it uses less digits than its factorization.

9998643468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2335 (or 2333 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 66.

The square root of 9998643468 is about 99993.2171099620. The cubic root of 9998643468 is about 2154.3372669732.

The spelling of 9998643468 in words is "nine billion, nine hundred ninety-eight million, six hundred forty-three thousand, four hundred sixty-eight".