260867729 has 2 divisors, whose sum is σ = 260867730. Its totient is φ = 260867728.

The previous prime is 260867699. The next prime is 260867807. The reversal of 260867729 is 927768062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206698129 + 54169600 = 14377^2 + 7360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260867729 is a prime.

It is not a weakly prime, because it can be changed into another prime (260860729) 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, 130433864 + 130433865.

It is an arithmetic number, because the mean of its divisors is an integer number (130433865).

Almost surely, 2^260867729 is an apocalyptic number.

It is an amenable number.

260867729 is a deficient number, since it is larger than the sum of its proper divisors (1).

260867729 is an equidigital number, since it uses as much as digits as its factorization.

260867729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 260867729 is about 16151.4002179378. The cubic root of 260867729 is about 638.9596778705.

The spelling of 260867729 in words is "two hundred sixty million, eight hundred sixty-seven thousand, seven hundred twenty-nine".