108666 has 12 divisors (see below), whose sum is σ = 235482. Its totient is φ = 36216.

The previous prime is 108649. The next prime is 108677. The reversal of 108666 is 666801.

It can be written as a sum of positive squares in only one way, i.e., 103041 + 5625 = 321^2 + 75^2 .

108666 is a modest number, since divided by 666 gives 108 as remainder.

It is a Curzon number.

It is an unprimeable number.

108666 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 5 ways as a sum of consecutive naturals, for example, 3001 + ... + 3036.

2¹⁰⁸⁶⁶⁶ is an apocalyptic number.

108666 is an abundant number, since it is smaller than the sum of its proper divisors (126816).

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

108666 is a wasteful number, since it uses less digits than its factorization.

108666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6045 (or 6042 counting only the distinct ones).

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

The square root of 108666 is about 329.6452638823. The cubic root of 108666 is about 47.7197207593.

The spelling of 108666 in words is "one hundred eight thousand, six hundred sixty-six".