664044103 has 2 divisors, whose sum is σ = 664044104. Its totient is φ = 664044102.

The previous prime is 664044097. The next prime is 664044107. The reversal of 664044103 is 301440466.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664044103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664044107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332022051 + 332022052.

It is an arithmetic number, because the mean of its divisors is an integer number (332022052).

Almost surely, 2^664044103 is an apocalyptic number.

664044103 is a deficient number, since it is larger than the sum of its proper divisors (1).

664044103 is an equidigital number, since it uses as much as digits as its factorization.

664044103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 664044103 is about 25769.0532034066. The cubic root of 664044103 is about 872.4334491648.

Adding to 664044103 its reverse (301440466), we get a palindrome (965484569).

It can be divided in two parts, 66404 and 4103, that added together give a palindrome (70507).

The spelling of 664044103 in words is "six hundred sixty-four million, forty-four thousand, one hundred three".