689417 has 4 divisors (see below), whose sum is σ = 713220. Its totient is φ = 665616.

The previous prime is 689411. The next prime is 689431. The reversal of 689417 is 714986.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 259081 + 430336 = 509^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 689417 - 2¹⁰ = 688393 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 689417.

It is not an unprimeable number, because it can be changed into a prime (689411) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11858 + ... + 11915.

It is an arithmetic number, because the mean of its divisors is an integer number (178305).

2⁶⁸⁹⁴¹⁷ is an apocalyptic number.

It is an amenable number.

689417 is a deficient number, since it is larger than the sum of its proper divisors (23803).

689417 is a wasteful number, since it uses less digits than its factorization.

689417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23802.

The product of its digits is 12096, while the sum is 35.

The square root of 689417 is about 830.3113873722. The cubic root of 689417 is about 88.3406647133.

The spelling of 689417 in words is "six hundred eighty-nine thousand, four hundred seventeen".