648103 has 4 divisors (see below), whose sum is σ = 649720. Its totient is φ = 646488.

The previous prime is 648101. The next prime is 648107. The reversal of 648103 is 301846.

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 648103 - 2¹ = 648101 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 (648101) 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, 301 + ... + 1177.

It is an arithmetic number, because the mean of its divisors is an integer number (162430).

2⁶⁴⁸¹⁰³ is an apocalyptic number.

648103 is a deficient number, since it is larger than the sum of its proper divisors (1617).

648103 is an equidigital number, since it uses as much as digits as its factorization.

648103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 648103 is about 805.0484457472. The cubic root of 648103 is about 86.5395589047.

Adding to 648103 its reverse (301846), we get a palindrome (949949).

The spelling of 648103 in words is "six hundred forty-eight thousand, one hundred three".