170516889 has 12 divisors (see below), whose sum is σ = 246518272. Its totient is φ = 113578200.

The previous prime is 170516873. The next prime is 170516891. The reversal of 170516889 is 988615071.

It is not a de Polignac number, because 170516889 - 2⁴ = 170516873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170516789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3384 + ... + 18774.

Almost surely, 2^170516889 is an apocalyptic number.

It is an amenable number.

170516889 is a deficient number, since it is larger than the sum of its proper divisors (76001383).

170516889 is a wasteful number, since it uses less digits than its factorization.

170516889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16628 (or 16625 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 170516889 is about 13058.2115544205. The cubic root of 170516889 is about 554.5267063112.

It can be divided in two parts, 170516 and 889, that added together give a triangular number (171405 = T₅₈₅).

The spelling of 170516889 in words is "one hundred seventy million, five hundred sixteen thousand, eight hundred eighty-nine".