659761 has 2 divisors, whose sum is σ = 659762. Its totient is φ = 659760.

The previous prime is 659759. The next prime is 659783. The reversal of 659761 is 167956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414736 + 245025 = 644^2 + 495^2 .

It is a cyclic number.

It is not a de Polignac number, because 659761 - 2¹ = 659759 is a prime.

Together with 659759, it forms a pair of twin primes.

659761 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (659741) 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, 329880 + 329881.

It is an arithmetic number, because the mean of its divisors is an integer number (329881).

2⁶⁵⁹⁷⁶¹ is an apocalyptic number.

It is an amenable number.

659761 is a deficient number, since it is larger than the sum of its proper divisors (1).

659761 is an equidigital number, since it uses as much as digits as its factorization.

659761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 34.

The square root of 659761 is about 812.2567328130. The cubic root of 659761 is about 87.0553661760.

The spelling of 659761 in words is "six hundred fifty-nine thousand, seven hundred sixty-one".