2103666 has 16 divisors (see below), whose sum is σ = 4270944. Its totient is φ = 690624.

The previous prime is 2103653. The next prime is 2103667. The reversal of 2103666 is 6663012.

It is not an unprimeable number, because it can be changed into a prime (2103667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2215 + ... + 3018.

It is an arithmetic number, because the mean of its divisors is an integer number (266934).

2^2103666 is an apocalyptic number.

2103666 is an abundant number, since it is smaller than the sum of its proper divisors (2167278).

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

2103666 is a wasteful number, since it uses less digits than its factorization.

2103666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2103666 is about 1450.4020132363. The cubic root of 2103666 is about 128.1323906901.

Adding to 2103666 its reverse (6663012), we get a palindrome (8766678).

The spelling of 2103666 in words is "two million, one hundred three thousand, six hundred sixty-six".