663504103 has 2 divisors, whose sum is σ = 663504104. Its totient is φ = 663504102.

The previous prime is 663504097. The next prime is 663504109. The reversal of 663504103 is 301405366.

663504103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (663504097) and next prime (663504109).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-663504103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663504109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331752051 + 331752052.

It is an arithmetic number, because the mean of its divisors is an integer number (331752052).

Almost surely, 2^663504103 is an apocalyptic number.

663504103 is a deficient number, since it is larger than the sum of its proper divisors (1).

663504103 is an equidigital number, since it uses as much as digits as its factorization.

663504103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 663504103 is about 25758.5733882915. The cubic root of 663504103 is about 872.1968976962.

Adding to 663504103 its reverse (301405366), we get a palindrome (964909469).

The spelling of 663504103 in words is "six hundred sixty-three million, five hundred four thousand, one hundred three".