659849 has 2 divisors, whose sum is σ = 659850. Its totient is φ = 659848.

The previous prime is 659843. The next prime is 659863. The reversal of 659849 is 948956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499849 + 160000 = 707^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 659849 - 2¹⁶ = 594313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (659843) 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, 329924 + 329925.

It is an arithmetic number, because the mean of its divisors is an integer number (329925).

2⁶⁵⁹⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

659849 is a deficient number, since it is larger than the sum of its proper divisors (1).

659849 is an equidigital number, since it uses as much as digits as its factorization.

659849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 659849 is about 812.3109010718. The cubic root of 659849 is about 87.0592365329.

The spelling of 659849 in words is "six hundred fifty-nine thousand, eight hundred forty-nine".