648632 has 16 divisors (see below), whose sum is σ = 1231200. Its totient is φ = 320320.

The previous prime is 648631. The next prime is 648649. The reversal of 648632 is 236846.

It is a junction number, because it is equal to n+sod(n) for n = 648595 and 648604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648631) 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, 257 + ... + 1167.

It is an arithmetic number, because the mean of its divisors is an integer number (76950).

2⁶⁴⁸⁶³² is an apocalyptic number.

It is an amenable number.

648632 is a deficient number, since it is larger than the sum of its proper divisors (582568).

648632 is a wasteful number, since it uses less digits than its factorization.

648632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 1002 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 648632 is about 805.3769303873. The cubic root of 648632 is about 86.5630978467.

The spelling of 648632 in words is "six hundred forty-eight thousand, six hundred thirty-two".