689031 has 12 divisors (see below), whose sum is σ = 1137552. Its totient is φ = 393696.

The previous prime is 689021. The next prime is 689033. The reversal of 689031 is 130986.

It is not a de Polignac number, because 689031 - 2⁵ = 688999 is a prime.

It is a super-2 number, since 2×689031² = 949527437922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 688986 and 689004.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 689031.

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 11 ways as a sum of consecutive naturals, for example, 5406 + ... + 5531.

It is an arithmetic number, because the mean of its divisors is an integer number (94796).

2⁶⁸⁹⁰³¹ is an apocalyptic number.

689031 is a deficient number, since it is larger than the sum of its proper divisors (448521).

689031 is a wasteful number, since it uses less digits than its factorization.

689031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10950 (or 10947 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 689031 is about 830.0789119114. The cubic root of 689031 is about 88.3241745181.

The spelling of 689031 in words is "six hundred eighty-nine thousand, thirty-one".