678339 has 24 divisors (see below), whose sum is σ = 1067040. Its totient is φ = 413952.

The previous prime is 678329. The next prime is 678341. The reversal of 678339 is 933876.

678339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 678339 - 2⁷ = 678211 is a prime.

Its product of digits (27216) is a multiple of the sum of its prime divisors (168).

It is not an unprimeable number, because it can be changed into a prime (678329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5947 + ... + 6059.

It is an arithmetic number, because the mean of its divisors is an integer number (44460).

2⁶⁷⁸³³⁹ is an apocalyptic number.

678339 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

678339 is a deficient number, since it is larger than the sum of its proper divisors (388701).

678339 is a wasteful number, since it uses less digits than its factorization.

678339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 168 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 678339 is about 823.6133801730. The cubic root of 678339 is about 87.8649357128.

The spelling of 678339 in words is "six hundred seventy-eight thousand, three hundred thirty-nine".