648604 has 12 divisors (see below), whose sum is σ = 1238328. Its totient is φ = 294800.

The previous prime is 648563. The next prime is 648607. The reversal of 648604 is 406846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648607) by changing a digit.

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, 7327 + ... + 7414.

It is an arithmetic number, because the mean of its divisors is an integer number (103194).

2⁶⁴⁸⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

648604 is a deficient number, since it is larger than the sum of its proper divisors (589724).

648604 is a wasteful number, since it uses less digits than its factorization.

648604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14756 (or 14754 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 648604 is about 805.3595470347. The cubic root of 648604 is about 86.5618522501.

It can be divided in two parts, 64 and 8604, that added together give a palindrome (8668).

The spelling of 648604 in words is "six hundred forty-eight thousand, six hundred four".