663103 has 8 divisors (see below), whose sum is σ = 775808. Its totient is φ = 554904.

The previous prime is 663097. The next prime is 663127. The reversal of 663103 is 301366.

It is a happy number.

663103 is nontrivially palindromic in base 15.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 663103 - 2⁵ = 663071 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663163) 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, 801 + ... + 1402.

It is an arithmetic number, because the mean of its divisors is an integer number (96976).

2⁶⁶³¹⁰³ is an apocalyptic number.

663103 is a deficient number, since it is larger than the sum of its proper divisors (112705).

663103 is a wasteful number, since it uses less digits than its factorization.

663103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2253.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 663103 is about 814.3113655108. The cubic root of 663103 is about 87.2021108122.

Adding to 663103 its reverse (301366), we get a palindrome (964469).

The spelling of 663103 in words is "six hundred sixty-three thousand, one hundred three".