648304 has 10 divisors (see below), whose sum is σ = 1256120. Its totient is φ = 324144.

The previous prime is 648293. The next prime is 648317. The reversal of 648304 is 403846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20244 + ... + 20275.

It is an arithmetic number, because the mean of its divisors is an integer number (125612).

2⁶⁴⁸³⁰⁴ is an apocalyptic number.

It is an amenable number.

648304 is a deficient number, since it is larger than the sum of its proper divisors (607816).

648304 is a wasteful number, since it uses less digits than its factorization.

648304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40527 (or 40521 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 648304 is about 805.1732732772. The cubic root of 648304 is about 86.5485043210.

The spelling of 648304 in words is "six hundred forty-eight thousand, three hundred four".