648323 has 4 divisors (see below), whose sum is σ = 698208. Its totient is φ = 598440.

The previous prime is 648317. The next prime is 648331. The reversal of 648323 is 323846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323846 = 2 ⋅161923.

It is a cyclic number.

It is not a de Polignac number, because 648323 - 2⁶ = 648259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 648292 and 648301.

It is not an unprimeable number, because it can be changed into a prime (648343) 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, 24923 + ... + 24948.

It is an arithmetic number, because the mean of its divisors is an integer number (174552).

2⁶⁴⁸³²³ is an apocalyptic number.

648323 is a deficient number, since it is larger than the sum of its proper divisors (49885).

648323 is a wasteful number, since it uses less digits than its factorization.

648323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49884.

The product of its digits is 3456, while the sum is 26.

The square root of 648323 is about 805.1850718934. The cubic root of 648323 is about 86.5493498120.

The spelling of 648323 in words is "six hundred forty-eight thousand, three hundred twenty-three".