103666 has 8 divisors (see below), whose sum is σ = 164700. Its totient is φ = 48768.

The previous prime is 103657. The next prime is 103669. The reversal of 103666 is 666301.

It can be written as a sum of positive squares in 2 ways, for example, as 103041 + 625 = 321^2 + 25^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (103669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1491 + ... + 1558.

2¹⁰³⁶⁶⁶ is an apocalyptic number.

103666 is a deficient number, since it is larger than the sum of its proper divisors (61034).

103666 is a wasteful number, since it uses less digits than its factorization.

103666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 103666 is about 321.9720484763. The cubic root of 103666 is about 46.9762970870.

Adding to 103666 its reverse (666301), we get a palindrome (769967).

The spelling of 103666 in words is "one hundred three thousand, six hundred sixty-six".