689485 has 8 divisors (see below), whose sum is σ = 839160. Its totient is φ = 543744.

The previous prime is 689467. The next prime is 689509. The reversal of 689485 is 584986.

It can be written as a sum of positive squares in 4 ways, for example, as 79524 + 609961 = 282^2 + 781^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 689485 - 2⁷ = 689357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 580 + ... + 1309.

It is an arithmetic number, because the mean of its divisors is an integer number (104895).

2⁶⁸⁹⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

689485 is a deficient number, since it is larger than the sum of its proper divisors (149675).

689485 is a wasteful number, since it uses less digits than its factorization.

689485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967.

The product of its digits is 69120, while the sum is 40.

The square root of 689485 is about 830.3523348555. The cubic root of 689485 is about 88.3435690840.

The spelling of 689485 in words is "six hundred eighty-nine thousand, four hundred eighty-five".