260000387 has 2 divisors, whose sum is σ = 260000388. Its totient is φ = 260000386.

The previous prime is 260000357. The next prime is 260000423. The reversal of 260000387 is 783000062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260000387 - 2¹² = 259996291 is a prime.

It is not a weakly prime, because it can be changed into another prime (260000357) 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, 130000193 + 130000194.

It is an arithmetic number, because the mean of its divisors is an integer number (130000194).

Almost surely, 2^260000387 is an apocalyptic number.

260000387 is a deficient number, since it is larger than the sum of its proper divisors (1).

260000387 is an equidigital number, since it uses as much as digits as its factorization.

260000387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 260000387 is about 16124.5274969532. The cubic root of 260000387 is about 638.2507465562.

The spelling of 260000387 in words is "two hundred sixty million, three hundred eighty-seven", and thus it is an aban number.