678604 has 12 divisors (see below), whose sum is σ = 1250200. Its totient is φ = 321408.

The previous prime is 678599. The next prime is 678607. The reversal of 678604 is 406876.

678604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×678604⁴ (a number of 24 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (678607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4389 + ... + 4540.

2⁶⁷⁸⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

678604 is a deficient number, since it is larger than the sum of its proper divisors (571596).

678604 is a wasteful number, since it uses less digits than its factorization.

678604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8952 (or 8950 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 678604 is about 823.7742409180. The cubic root of 678604 is about 87.8763759989.

The spelling of 678604 in words is "six hundred seventy-eight thousand, six hundred four".