16870171 has 4 divisors (see below), whose sum is σ = 17862552. Its totient is φ = 15877792.

The previous prime is 16870153. The next prime is 16870177. The reversal of 16870171 is 17107861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17107861 = 113 ⋅151397.

It is a cyclic number.

It is not a de Polignac number, because 16870171 - 2⁹ = 16869659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16870177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496165 + ... + 496198.

It is an arithmetic number, because the mean of its divisors is an integer number (4465638).

Almost surely, 2^16870171 is an apocalyptic number.

16870171 is a deficient number, since it is larger than the sum of its proper divisors (992381).

16870171 is an equidigital number, since it uses as much as digits as its factorization.

16870171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992380.

The product of its (nonzero) digits is 2352, while the sum is 31.

The square root of 16870171 is about 4107.3313720712. The cubic root of 16870171 is about 256.4719230781.

The spelling of 16870171 in words is "sixteen million, eight hundred seventy thousand, one hundred seventy-one".