678790 has 16 divisors (see below), whose sum is σ = 1396512. Its totient is φ = 232704.

The previous prime is 678779. The next prime is 678809. The reversal of 678790 is 97876.

678790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4779 + ... + 4918.

It is an arithmetic number, because the mean of its divisors is an integer number (87282).

2⁶⁷⁸⁷⁹⁰ is an apocalyptic number.

678790 is an abundant number, since it is smaller than the sum of its proper divisors (717722).

It is a weird number, because it is abundant, but not a pseudoperfect number.

678790 is a wasteful number, since it uses less digits than its factorization.

678790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9711.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 678790 is about 823.8871281917. The cubic root of 678790 is about 87.8844040058.

The spelling of 678790 in words is "six hundred seventy-eight thousand, seven hundred ninety".