678884 has 12 divisors (see below), whose sum is σ = 1215984. Its totient is φ = 331464.

The previous prime is 678883. The next prime is 678901. The reversal of 678884 is 488876.

It is a happy number.

It is a super-3 number, since 3×678884³ = 938659272420933312, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (678883) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1802 + ... + 2145.

It is an arithmetic number, because the mean of its divisors is an integer number (101332).

2⁶⁷⁸⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

678884 is a deficient number, since it is larger than the sum of its proper divisors (537100).

678884 is a wasteful number, since it uses less digits than its factorization.

678884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3994 (or 3992 counting only the distinct ones).

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

The square root of 678884 is about 823.9441728661. The cubic root of 678884 is about 87.8884606127. Note that the first 3 decimals are identical.

The spelling of 678884 in words is "six hundred seventy-eight thousand, eight hundred eighty-four".