687548 has 12 divisors (see below), whose sum is σ = 1274112. Its totient is φ = 323520.

The previous prime is 687541. The next prime is 687551. The reversal of 687548 is 845786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687541) by changing a digit.

687548 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4988 + ... + 5123.

It is an arithmetic number, because the mean of its divisors is an integer number (106176).

2⁶⁸⁷⁵⁴⁸ is an apocalyptic number.

687548 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

687548 is a deficient number, since it is larger than the sum of its proper divisors (586564).

687548 is a wasteful number, since it uses less digits than its factorization.

687548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10132 (or 10130 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 687548 is about 829.1851421727. The cubic root of 687548 is about 88.2607623562.

The spelling of 687548 in words is "six hundred eighty-seven thousand, five hundred forty-eight".