9897673632 has 384 divisors, whose sum is σ = 34766807040. Its totient is φ = 2386575360.

The previous prime is 9897673631. The next prime is 9897673673. The reversal of 9897673632 is 2363767989.

It is not an unprimeable number, because it can be changed into a prime (9897673631) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9926958 + ... + 9927954.

It is an arithmetic number, because the mean of its divisors is an integer number (90538560).

Almost surely, 2^9897673632 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 9897673632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17383403520).

9897673632 is an abundant number, since it is smaller than the sum of its proper divisors (24869133408).

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

9897673632 is a wasteful number, since it uses less digits than its factorization.

9897673632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124 (or 1116 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 60.

The square root of 9897673632 is about 99487.0525847459. The cubic root of 9897673632 is about 2147.0609657681.

It can be divided in two parts, 989767 and 3632, that added together give a palindrome (993399).

The spelling of 9897673632 in words is "nine billion, eight hundred ninety-seven million, six hundred seventy-three thousand, six hundred thirty-two".