689044 has 12 divisors (see below), whose sum is σ = 1276884. Its totient is φ = 324224.

The previous prime is 689041. The next prime is 689063. The reversal of 689044 is 440986.

689044 = T₁₀₇ + T₁₀₈ + ... + T₁₇₄.

It can be written as a sum of positive squares in 2 ways, for example, as 544644 + 144400 = 738^2 + 380^2 .

It is a junction number, because it is equal to n+sod(n) for n = 688997 and 689015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689041) 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, 4999 + ... + 5134.

It is an arithmetic number, because the mean of its divisors is an integer number (106407).

2⁶⁸⁹⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

689044 is a deficient number, since it is larger than the sum of its proper divisors (587840).

689044 is a wasteful number, since it uses less digits than its factorization.

689044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10154 (or 10152 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 689044 is about 830.0867424553. The cubic root of 689044 is about 88.3247299876.

The spelling of 689044 in words is "six hundred eighty-nine thousand, forty-four".