689078 has 16 divisors (see below), whose sum is σ = 1179360. Its totient is φ = 299136.

The previous prime is 689077. The next prime is 689081. The reversal of 689078 is 870986.

689078 is nontrivially palindromic in base 7.

689078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (73710).

2⁶⁸⁹⁰⁷⁸ is an apocalyptic number.

689078 is a deficient number, since it is larger than the sum of its proper divisors (490282).

689078 is a wasteful number, since it uses less digits than its factorization.

689078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 689078 is about 830.1072219900. The cubic root of 689078 is about 88.3261827209.

The spelling of 689078 in words is "six hundred eighty-nine thousand, seventy-eight".