170489666 has 16 divisors (see below), whose sum is σ = 265672440. Its totient is φ = 81957120.

The previous prime is 170489629. The next prime is 170489689. The reversal of 170489666 is 666984071.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 167159041 + 3330625 = 12929^2 + 1825^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 170489666.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7880 + ... + 20076.

Almost surely, 2^170489666 is an apocalyptic number.

170489666 is a deficient number, since it is larger than the sum of its proper divisors (95182774).

170489666 is a wasteful number, since it uses less digits than its factorization.

170489666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12469.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 170489666 is about 13057.1691418929. The cubic root of 170489666 is about 554.4971947009.

The spelling of 170489666 in words is "one hundred seventy million, four hundred eighty-nine thousand, six hundred sixty-six".