170660 has 48 divisors (see below), whose sum is σ = 435456. Its totient is φ = 54912.

The previous prime is 170647. The next prime is 170669. The reversal of 170660 is 66071.

170660 is nontrivially palindromic in base 9.

It is a super-3 number, since 3×170660³ = 14911333330488000, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (170669) 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, 3194 + ... + 3246.

It is an arithmetic number, because the mean of its divisors is an integer number (9072).

2¹⁷⁰⁶⁶⁰ is an apocalyptic number.

170660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 170660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217728).

170660 is an abundant number, since it is smaller than the sum of its proper divisors (264796).

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

170660 is a wasteful number, since it uses less digits than its factorization.

170660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 170660 is about 413.1101548014. The cubic root of 170660 is about 55.4681796873.

The spelling of 170660 in words is "one hundred seventy thousand, six hundred sixty".