689465 has 8 divisors (see below), whose sum is σ = 945600. Its totient is φ = 472752.

The previous prime is 689461. The next prime is 689467. The reversal of 689465 is 564986.

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

It is not a de Polignac number, because 689465 - 2² = 689461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (689461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9815 + ... + 9884.

It is an arithmetic number, because the mean of its divisors is an integer number (118200).

2⁶⁸⁹⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

689465 is a deficient number, since it is larger than the sum of its proper divisors (256135).

689465 is a wasteful number, since it uses less digits than its factorization.

689465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19711.

The product of its digits is 51840, while the sum is 38.

The square root of 689465 is about 830.3402916877. The cubic root of 689465 is about 88.3427148772.

The spelling of 689465 in words is "six hundred eighty-nine thousand, four hundred sixty-five".