5689 has 2 divisors, whose sum is σ = 5690. Its totient is φ = 5688.
The previous prime is 5683. The next prime is 5693. The reversal of 5689 is 9865.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 5625 + 64 = 75^2 + 8^2 .
It is a cyclic number.
It is not a de Polignac number, because 5689 - 25 = 5657 is a prime.
It is a plaindrome in base 10 and base 13.
It is a nialpdrome in base 9.
It is not a weakly prime, because it can be changed into another prime (5683) 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 as a sum of consecutive naturals, namely, 2844 + 2845.
It is an arithmetic number, because the mean of its divisors is an integer number (2845).
25689 is an apocalyptic number.
It is an amenable number.
5689 is a deficient number, since it is larger than the sum of its proper divisors (1).
5689 is an equidigital number, since it uses as much as digits as its factorization.
5689 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 2160, while the sum is 28.
The square root of 5689 is about 75.4254598925. The cubic root of 5689 is about 17.8516615558.
The spelling of 5689 in words is "five thousand, six hundred eighty-nine".
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