9906587171 has 8 divisors (see below), whose sum is σ = 10731762720. Its totient is φ = 9144539976.

The previous prime is 9906587153. The next prime is 9906587177. The reversal of 9906587171 is 1717856099.

It is not a de Polignac number, because 9906587171 - 2⁶ = 9906587107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9906587177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2252375 + ... + 2256768.

It is an arithmetic number, because the mean of its divisors is an integer number (1341470340).

Almost surely, 2^9906587171 is an apocalyptic number.

9906587171 is a deficient number, since it is larger than the sum of its proper divisors (825175549).

9906587171 is an equidigital number, since it uses as much as digits as its factorization.

9906587171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4509182 (or 4509156 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 53.

The square root of 9906587171 is about 99531.8399860065. The cubic root of 9906587171 is about 2147.7052979696.

The spelling of 9906587171 in words is "nine billion, nine hundred six million, five hundred eighty-seven thousand, one hundred seventy-one".