659723 has 2 divisors, whose sum is σ = 659724. Its totient is φ = 659722.

The previous prime is 659713. The next prime is 659741. The reversal of 659723 is 327956.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 659723 - 2⁸ = 659467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 659723.

It is not a weakly prime, because it can be changed into another prime (659713) 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, 329861 + 329862.

It is an arithmetic number, because the mean of its divisors is an integer number (329862).

2⁶⁵⁹⁷²³ is an apocalyptic number.

659723 is a deficient number, since it is larger than the sum of its proper divisors (1).

659723 is an equidigital number, since it uses as much as digits as its factorization.

659723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 32.

The square root of 659723 is about 812.2333408572. The cubic root of 659723 is about 87.0536947791.

The spelling of 659723 in words is "six hundred fifty-nine thousand, seven hundred twenty-three".