678875 has 8 divisors (see below), whose sum is σ = 847392. Its totient is φ = 543000.

The previous prime is 678871. The next prime is 678883. The reversal of 678875 is 578876.

It is not a de Polignac number, because 678875 - 2² = 678871 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 678875.

It is not an unprimeable number, because it can be changed into a prime (678871) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2591 + ... + 2840.

It is an arithmetic number, because the mean of its divisors is an integer number (105924).

2⁶⁷⁸⁸⁷⁵ is an apocalyptic number.

678875 is a deficient number, since it is larger than the sum of its proper divisors (168517).

678875 is an equidigital number, since it uses as much as digits as its factorization.

678875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5446 (or 5436 counting only the distinct ones).

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

The square root of 678875 is about 823.9387113129. The cubic root of 678875 is about 87.8880722304. Note that the first 3 decimals are identical.

Subtracting from 678875 its reverse (578876), we obtain a palindrome (99999).

The spelling of 678875 in words is "six hundred seventy-eight thousand, eight hundred seventy-five".