648203 has 4 divisors (see below), whose sum is σ = 665760. Its totient is φ = 630648.

The previous prime is 648199. The next prime is 648211. The reversal of 648203 is 302846.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302846 = 2 ⋅151423.

It is a cyclic number.

It is not a de Polignac number, because 648203 - 2² = 648199 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648283) 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, 8723 + ... + 8796.

It is an arithmetic number, because the mean of its divisors is an integer number (166440).

2⁶⁴⁸²⁰³ is an apocalyptic number.

648203 is a deficient number, since it is larger than the sum of its proper divisors (17557).

648203 is a wasteful number, since it uses less digits than its factorization.

648203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17556.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 648203 is about 805.1105514151. The cubic root of 648203 is about 86.5440095918.

The spelling of 648203 in words is "six hundred forty-eight thousand, two hundred three".