1660103 has 2 divisors, whose sum is σ = 1660104. Its totient is φ = 1660102.

The previous prime is 1660097. The next prime is 1660111. The reversal of 1660103 is 3010661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1660103 - 2⁶ = 1660039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830051 + 830052.

It is an arithmetic number, because the mean of its divisors is an integer number (830052).

2^1660103 is an apocalyptic number.

1660103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660103 is an equidigital number, since it uses as much as digits as its factorization.

1660103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1660103 is about 1288.4498438046. The cubic root of 1660103 is about 118.4072636386.

Adding to 1660103 its reverse (3010661), we get a palindrome (4670764).

The spelling of 1660103 in words is "one million, six hundred sixty thousand, one hundred three".