260397617 has 2 divisors, whose sum is σ = 260397618. Its totient is φ = 260397616.

The previous prime is 260397547. The next prime is 260397623. The reversal of 260397617 is 716793062.

260397617 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., 142110241 + 118287376 = 11921^2 + 10876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260397617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (260397647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130198808 + 130198809.

It is an arithmetic number, because the mean of its divisors is an integer number (130198809).

Almost surely, 2^260397617 is an apocalyptic number.

It is an amenable number.

260397617 is a deficient number, since it is larger than the sum of its proper divisors (1).

260397617 is an equidigital number, since it uses as much as digits as its factorization.

260397617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 260397617 is about 16136.8403660692. The cubic root of 260397617 is about 638.5756221464.

The spelling of 260397617 in words is "two hundred sixty million, three hundred ninety-seven thousand, six hundred seventeen".