688748 has 12 divisors (see below), whose sum is σ = 1212120. Its totient is φ = 342432.

The previous prime is 688747. The next prime is 688757. The reversal of 688748 is 847886.

It is a happy number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 688748.

It is not an unprimeable number, because it can be changed into a prime (688741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563 + ... + 1301.

It is an arithmetic number, because the mean of its divisors is an integer number (101010).

2⁶⁸⁸⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

688748 is a deficient number, since it is larger than the sum of its proper divisors (523372).

688748 is a wasteful number, since it uses less digits than its factorization.

688748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976 (or 974 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

The square root of 688748 is about 829.9084286836. The cubic root of 688748 is about 88.3120806432.

The spelling of 688748 in words is "six hundred eighty-eight thousand, seven hundred forty-eight".