687875 has 8 divisors (see below), whose sum is σ = 858624. Its totient is φ = 550200.

The previous prime is 687847. The next prime is 687893. The reversal of 687875 is 578786.

It is a de Polignac number, because none of the positive numbers 2^k-687875 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 687875.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2627 + ... + 2876.

It is an arithmetic number, because the mean of its divisors is an integer number (107328).

2⁶⁸⁷⁸⁷⁵ is an apocalyptic number.

687875 is a deficient number, since it is larger than the sum of its proper divisors (170749).

687875 is an equidigital number, since it uses as much as digits as its factorization.

687875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5518 (or 5508 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 687875 is about 829.3823002693. The cubic root of 687875 is about 88.2747525043.

The spelling of 687875 in words is "six hundred eighty-seven thousand, eight hundred seventy-five".