648123 has 12 divisors (see below), whose sum is σ = 1005480. Its totient is φ = 370272.

The previous prime is 648119. The next prime is 648133. The reversal of 648123 is 321846.

It is a happy number.

It is not a de Polignac number, because 648123 - 2² = 648119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 648093 and 648102.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648123.

It is not an unprimeable number, because it can be changed into a prime (648133) 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 in 11 ways as a sum of consecutive naturals, for example, 2058 + ... + 2351.

It is an arithmetic number, because the mean of its divisors is an integer number (83790).

2⁶⁴⁸¹²³ is an apocalyptic number.

648123 is a deficient number, since it is larger than the sum of its proper divisors (357357).

648123 is a wasteful number, since it uses less digits than its factorization.

648123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426 (or 4419 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 648123 is about 805.0608672641. The cubic root of 648123 is about 86.5404490788.

Adding to 648123 its reverse (321846), we get a palindrome (969969).

The spelling of 648123 in words is "six hundred forty-eight thousand, one hundred twenty-three".