648732 has 24 divisors (see below), whose sum is σ = 1730176. Its totient is φ = 185328.

The previous prime is 648731. The next prime is 648763. The reversal of 648732 is 237846.

648732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 648732.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648732.

It is not an unprimeable number, because it can be changed into a prime (648731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3778 + ... + 3945.

2⁶⁴⁸⁷³² is an apocalyptic number.

It is an amenable number.

648732 is an abundant number, since it is smaller than the sum of its proper divisors (1081444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648732 is a wasteful number, since it uses less digits than its factorization.

648732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7737 (or 7735 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 648732 is about 805.4390107264. The cubic root of 648732 is about 86.5675461138.

The spelling of 648732 in words is "six hundred forty-eight thousand, seven hundred thirty-two".