678908 has 12 divisors (see below), whose sum is σ = 1250760. Its totient is φ = 321552.

The previous prime is 678907. The next prime is 678941. The reversal of 678908 is 809876.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678901) 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 3 ways as a sum of consecutive naturals, for example, 4391 + ... + 4542.

It is an arithmetic number, because the mean of its divisors is an integer number (104230).

2⁶⁷⁸⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

678908 is a deficient number, since it is larger than the sum of its proper divisors (571852).

678908 is a wasteful number, since it uses less digits than its factorization.

678908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8956 (or 8954 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 678908 is about 823.9587368309. The cubic root of 678908 is about 87.8894962821.

The spelling of 678908 in words is "six hundred seventy-eight thousand, nine hundred eight".