170746489 has 9 divisors (see below), whose sum is σ = 174090063. Its totient is φ = 167466672.

The previous prime is 170746469. The next prime is 170746517. The reversal of 170746489 is 984647071.

The square root of 170746489 is 13067.

It is a perfect power (a square), and thus also a powerful number.

170746489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 96924025 + 73822464 = 9845^2 + 8592^2 .

It is a de Polignac number, because none of the positive numbers 2^k-170746489 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (170746439) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 953802 + ... + 953980.

Almost surely, 2^170746489 is an apocalyptic number.

170746489 is the 13067-th square number.

170746489 is the 6534-th centered octagonal number.

It is an amenable number.

170746489 is a deficient number, since it is larger than the sum of its proper divisors (3343574).

170746489 is an frugal number, since it uses more digits than its factorization.

170746489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 46.

The cubic root of 170746489 is about 554.7754836812.

The spelling of 170746489 in words is "one hundred seventy million, seven hundred forty-six thousand, four hundred eighty-nine".