260609 has 2 divisors, whose sum is σ = 260610. Its totient is φ = 260608.

The previous prime is 260587. The next prime is 260629. The reversal of 260609 is 906062.

260609 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 can be written as a sum of positive squares in only one way, i.e., 250000 + 10609 = 500^2 + 103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260609 is a prime.

It is a Chen prime.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (260629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130304 + 130305.

It is an arithmetic number, because the mean of its divisors is an integer number (130305).

It is a Proth number, since it is equal to 509 ⋅ 2⁹ + 1 and 509 < 2⁹.

2²⁶⁰⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

260609 is a deficient number, since it is larger than the sum of its proper divisors (1).

260609 is an equidigital number, since it uses as much as digits as its factorization.

260609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 260609 is about 510.4987757086. The cubic root of 260609 is about 63.8748367611.

The spelling of 260609 in words is "two hundred sixty thousand, six hundred nine".