648908 has 12 divisors (see below), whose sum is σ = 1223040. Its totient is φ = 299472.

The previous prime is 648889. The next prime is 648911. The reversal of 648908 is 809846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6188 + ... + 6291.

It is an arithmetic number, because the mean of its divisors is an integer number (101920).

2⁶⁴⁸⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

648908 is a deficient number, since it is larger than the sum of its proper divisors (574132).

648908 is a wasteful number, since it uses less digits than its factorization.

648908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12496 (or 12494 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 648908 is about 805.5482605034. The cubic root of 648908 is about 86.5753739536.

The spelling of 648908 in words is "six hundred forty-eight thousand, nine hundred eight".