678039 has 4 divisors (see below), whose sum is σ = 904056. Its totient is φ = 452024.

The previous prime is 678037. The next prime is 678047. The reversal of 678039 is 930876.

It is a happy number.

678039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 678039 - 2¹ = 678037 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678037) 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, 113004 + ... + 113009.

It is an arithmetic number, because the mean of its divisors is an integer number (226014).

2⁶⁷⁸⁰³⁹ is an apocalyptic number.

678039 is a deficient number, since it is larger than the sum of its proper divisors (226017).

678039 is a wasteful number, since it uses less digits than its factorization.

678039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226016.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 678039 is about 823.4312357447. The cubic root of 678039 is about 87.8519808493.

The spelling of 678039 in words is "six hundred seventy-eight thousand, thirty-nine".