260609617 has 2 divisors, whose sum is σ = 260609618. Its totient is φ = 260609616.

The previous prime is 260609579. The next prime is 260609623. The reversal of 260609617 is 716906062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260370496 + 239121 = 16136^2 + 489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260609617 is a prime.

It is not a weakly prime, because it can be changed into another prime (260609647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130304808 + 130304809.

It is an arithmetic number, because the mean of its divisors is an integer number (130304809).

Almost surely, 2^260609617 is an apocalyptic number.

It is an amenable number.

260609617 is a deficient number, since it is larger than the sum of its proper divisors (1).

260609617 is an equidigital number, since it uses as much as digits as its factorization.

260609617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 260609617 is about 16143.4078496456. The cubic root of 260609617 is about 638.7488716961.

The spelling of 260609617 in words is "two hundred sixty million, six hundred nine thousand, six hundred seventeen".