678204 has 18 divisors (see below), whose sum is σ = 1714440. Its totient is φ = 226056.

The previous prime is 678203. The next prime is 678211. The reversal of 678204 is 402876.

678204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9384 + ... + 9455.

2⁶⁷⁸²⁰⁴ is an apocalyptic number.

It is an amenable number.

678204 is an abundant number, since it is smaller than the sum of its proper divisors (1036236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678204 is a wasteful number, since it uses less digits than its factorization.

678204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18849 (or 18844 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 678204 is about 823.5314201656. The cubic root of 678204 is about 87.8591064970.

It can be divided in two parts, 6 and 78204, that added together give a triangular number (78210 = T₃₉₅).

The spelling of 678204 in words is "six hundred seventy-eight thousand, two hundred four".