648308 has 12 divisors (see below), whose sum is σ = 1153572. Its totient is φ = 318720.

The previous prime is 648293. The next prime is 648317. The reversal of 648308 is 803846.

648308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 183184 + 465124 = 428^2 + 682^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085 + ... + 1572.

It is an arithmetic number, because the mean of its divisors is an integer number (96131).

2⁶⁴⁸³⁰⁸ is an apocalyptic number.

It is an amenable number.

648308 is a deficient number, since it is larger than the sum of its proper divisors (505264).

648308 is a wasteful number, since it uses less digits than its factorization.

648308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722 (or 2720 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 648308 is about 805.1757572108. The cubic root of 648308 is about 86.5486823205.

The spelling of 648308 in words is "six hundred forty-eight thousand, three hundred eight".