9996558 has 64 divisors (see below), whose sum is σ = 23998464. Its totient is φ = 2736000.

The previous prime is 9996557. The next prime is 9996583. The reversal of 9996558 is 8556999.

It is a self number, because there is not a number n which added to its sum of digits gives 9996558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9996557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52243 + ... + 52433.

It is an arithmetic number, because the mean of its divisors is an integer number (374976).

Almost surely, 2^9996558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9996558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11999232).

9996558 is an abundant number, since it is smaller than the sum of its proper divisors (14001906).

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

9996558 is a wasteful number, since it uses less digits than its factorization.

9996558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281.

The product of its digits is 874800, while the sum is 51.

The square root of 9996558 is about 3161.7333853442. The cubic root of 9996558 is about 215.4187476193.

It can be divided in two parts, 999 and 6558, that added together give a palindrome (7557).

The spelling of 9996558 in words is "nine million, nine hundred ninety-six thousand, five hundred fifty-eight".