689285 has 8 divisors (see below), whose sum is σ = 854016. Its totient is φ = 533520.

The previous prime is 689279. The next prime is 689291. The reversal of 689285 is 582986.

It is an interprime number because it is at equal distance from previous prime (689279) and next prime (689291).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 689285 - 2¹⁴ = 672901 is a prime.

It is a super-2 number, since 2×689285² = 950227622450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2069 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (106752).

2⁶⁸⁹²⁸⁵ is an apocalyptic number.

It is an amenable number.

689285 is a deficient number, since it is larger than the sum of its proper divisors (164731).

689285 is a wasteful number, since it uses less digits than its factorization.

689285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483.

The product of its digits is 34560, while the sum is 38.

The square root of 689285 is about 830.2318953160. The cubic root of 689285 is about 88.3350262719.

The spelling of 689285 in words is "six hundred eighty-nine thousand, two hundred eighty-five".