689039 has 4 divisors (see below), whose sum is σ = 742056. Its totient is φ = 636024.

The previous prime is 689033. The next prime is 689041. The reversal of 689039 is 930986.

689039 = T₉₂ + T₉₃ + ... + T₁₆₉.

689039 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 689039 - 2⁸ = 688783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689033) 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, 26489 + ... + 26514.

It is an arithmetic number, because the mean of its divisors is an integer number (185514).

2⁶⁸⁹⁰³⁹ is an apocalyptic number.

689039 is a deficient number, since it is larger than the sum of its proper divisors (53017).

689039 is a wasteful number, since it uses less digits than its factorization.

689039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53016.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 689039 is about 830.0837307164. The cubic root of 689039 is about 88.3245163463.

The spelling of 689039 in words is "six hundred eighty-nine thousand, thirty-nine".