678732 has 24 divisors (see below), whose sum is σ = 1598016. Its totient is φ = 224208.

The previous prime is 678731. The next prime is 678739. The reversal of 678732 is 237876.

678732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 678693 and 678702.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 678732.

It is not an unprimeable number, because it can be changed into a prime (678731) 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, 1783 + ... + 2129.

It is an arithmetic number, because the mean of its divisors is an integer number (66584).

2⁶⁷⁸⁷³² is an apocalyptic number.

It is an amenable number.

678732 is an abundant number, since it is smaller than the sum of its proper divisors (919284).

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

678732 is a wasteful number, since it uses less digits than its factorization.

678732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 515 counting only the distinct ones).

The product of its digits is 14112, while the sum is 33.

The square root of 678732 is about 823.8519284435. The cubic root of 678732 is about 87.8819008061.

The spelling of 678732 in words is "six hundred seventy-eight thousand, seven hundred thirty-two".