260520779 has 2 divisors, whose sum is σ = 260520780. Its totient is φ = 260520778.

The previous prime is 260520763. The next prime is 260520803. The reversal of 260520779 is 977025062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260520779 - 2⁴ = 260520763 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (260520739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130260389 + 130260390.

It is an arithmetic number, because the mean of its divisors is an integer number (130260390).

Almost surely, 2^260520779 is an apocalyptic number.

260520779 is a deficient number, since it is larger than the sum of its proper divisors (1).

260520779 is an equidigital number, since it uses as much as digits as its factorization.

260520779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 260520779 is about 16140.6560895151. The cubic root of 260520779 is about 638.6762834035.

The spelling of 260520779 in words is "two hundred sixty million, five hundred twenty thousand, seven hundred seventy-nine".