259987267 has 2 divisors, whose sum is σ = 259987268. Its totient is φ = 259987266.

The previous prime is 259987261. The next prime is 259987319. The reversal of 259987267 is 762789952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259987267 - 2¹⁹ = 259462979 is a prime.

It is not a weakly prime, because it can be changed into another prime (259987261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129993633 + 129993634.

It is an arithmetic number, because the mean of its divisors is an integer number (129993634).

Almost surely, 2^259987267 is an apocalyptic number.

259987267 is a deficient number, since it is larger than the sum of its proper divisors (1).

259987267 is an equidigital number, since it uses as much as digits as its factorization.

259987267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 55.

The square root of 259987267 is about 16124.1206581940. The cubic root of 259987267 is about 638.2400106868.

The spelling of 259987267 in words is "two hundred fifty-nine million, nine hundred eighty-seven thousand, two hundred sixty-seven".