168660 has 36 divisors (see below), whose sum is σ = 512148. Its totient is φ = 44928.

The previous prime is 168643. The next prime is 168673. The reversal of 168660 is 66861.

It can be written as a sum of positive squares in 2 ways, for example, as 30276 + 138384 = 174^2 + 372^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

168660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289 + ... + 648.

2¹⁶⁸⁶⁶⁰ is an apocalyptic number.

168660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168660 is an abundant number, since it is smaller than the sum of its proper divisors (343488).

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

168660 is a wasteful number, since it uses less digits than its factorization.

168660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 947 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 168660 is about 410.6823590075. The cubic root of 168660 is about 55.2506466486.

It can be divided in two parts, 168 and 660, that added together give a palindrome (828).

The spelling of 168660 in words is "one hundred sixty-eight thousand, six hundred sixty".