659 has 2 divisors, whose sum is σ = 660. Its totient is φ = 658.
The previous prime is 653. The next prime is 661. The reversal of 659 is 956.
659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 659 - 24 = 643 is a prime.
It is a Sophie Germain prime.
Together with 661, it forms a pair of twin primes.
It is a Chen prime.
It is a plaindrome in base 8, base 12 and base 15.
It is a self number, because there is not a number n which added to its sum of digits gives 659.
It is not a weakly prime, because it can be changed into another prime (653) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329 + 330.
It is an arithmetic number, because the mean of its divisors is an integer number (330).
659 is a deficient number, since it is larger than the sum of its proper divisors (1).
659 is an equidigital number, since it uses as much as digits as its factorization.
659 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 270, while the sum is 20.
The square root of 659 is about 25.6709953060. The cubic root of 659 is about 8.7021882019.
Adding to 659 its product of digits (270), we get a palindrome (929).
It can be divided in two parts, 65 and 9, that multiplied together give a palindrome (585).
The spelling of 659 in words is "six hundred fifty-nine", and thus it is an aban number and an oban number.
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