118666 has 4 divisors (see below), whose sum is σ = 178002. Its totient is φ = 59332.

The previous prime is 118661. The next prime is 118669. The reversal of 118666 is 666811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 103041 + 15625 = 321^2 + 125^2 .

118666 is a modest number, since divided by 666 gives 118 as remainder.

It is not an unprimeable number, because it can be changed into a prime (118661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29665 + ... + 29668.

2¹¹⁸⁶⁶⁶ is an apocalyptic number.

118666 is a deficient number, since it is larger than the sum of its proper divisors (59336).

118666 is an equidigital number, since it uses as much as digits as its factorization.

118666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59335.

The product of its digits is 1728, while the sum is 28.

The square root of 118666 is about 344.4793172311. The cubic root of 118666 is about 49.1407862773.

It can be divided in two parts, 118 and 666, that added together give a square (784 = 28²).

The spelling of 118666 in words is "one hundred eighteen thousand, six hundred sixty-six".