678306 has 8 divisors (see below), whose sum is σ = 1356624. Its totient is φ = 226100.

The previous prime is 678299. The next prime is 678329. The reversal of 678306 is 603876.

It is a sphenic number, since it is the product of 3 distinct primes.

678306 is an admirable number.

It is an unprimeable number.

678306 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56520 + ... + 56531.

It is an arithmetic number, because the mean of its divisors is an integer number (169578).

2⁶⁷⁸³⁰⁶ is an apocalyptic number.

678306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

678306 is a wasteful number, since it uses less digits than its factorization.

678306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113056.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 678306 is about 823.5933462577. The cubic root of 678306 is about 87.8635108648.

The spelling of 678306 in words is "six hundred seventy-eight thousand, three hundred six".