1668103 has 4 divisors (see below), whose sum is σ = 1670760. Its totient is φ = 1665448.

The previous prime is 1668089. The next prime is 1668113. The reversal of 1668103 is 3018661.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1668103 - 2¹⁷ = 1537031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668113) 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, 201 + ... + 1837.

It is an arithmetic number, because the mean of its divisors is an integer number (417690).

2^1668103 is an apocalyptic number.

1668103 is a deficient number, since it is larger than the sum of its proper divisors (2657).

1668103 is a wasteful number, since it uses less digits than its factorization.

1668103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1668103 is about 1291.5506184428. The cubic root of 1668103 is about 118.5971595997.

It can be divided in two parts, 1668 and 103, that added together give a palindrome (1771).

The spelling of 1668103 in words is "one million, six hundred sixty-eight thousand, one hundred three".