260905679 has 2 divisors, whose sum is σ = 260905680. Its totient is φ = 260905678.

The previous prime is 260905657. The next prime is 260905691. The reversal of 260905679 is 976509062.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 260905679 - 2¹⁶ = 260840143 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260907679) 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, 130452839 + 130452840.

It is an arithmetic number, because the mean of its divisors is an integer number (130452840).

Almost surely, 2^260905679 is an apocalyptic number.

260905679 is a deficient number, since it is larger than the sum of its proper divisors (1).

260905679 is an equidigital number, since it uses as much as digits as its factorization.

260905679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 260905679 is about 16152.5749959565. The cubic root of 260905679 is about 638.9906608059.

The spelling of 260905679 in words is "two hundred sixty million, nine hundred five thousand, six hundred seventy-nine".