9998170 has 32 divisors (see below), whose sum is σ = 22151808. Its totient is φ = 3163968.

The previous prime is 9998147. The next prime is 9998173. The reversal of 9998170 is 718999.

9998170 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

9998170 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (9998173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4584 + ... + 6403.

It is an arithmetic number, because the mean of its divisors is an integer number (692244).

Almost surely, 2^9998170 is an apocalyptic number.

9998170 is an abundant number, since it is smaller than the sum of its proper divisors (12153638).

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

9998170 is a wasteful number, since it uses less digits than its factorization.

9998170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11014.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 9998170 is about 3161.9882985236. The cubic root of 9998170 is about 215.4303261498.

The spelling of 9998170 in words is "nine million, nine hundred ninety-eight thousand, one hundred seventy".