265688047 has 2 divisors, whose sum is σ = 265688048. Its totient is φ = 265688046.

The previous prime is 265688023. The next prime is 265688057. The reversal of 265688047 is 740886562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265688047 - 2¹¹ = 265685999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 265687988 and 265688006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265688057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132844023 + 132844024.

It is an arithmetic number, because the mean of its divisors is an integer number (132844024).

Almost surely, 2^265688047 is an apocalyptic number.

265688047 is a deficient number, since it is larger than the sum of its proper divisors (1).

265688047 is an equidigital number, since it uses as much as digits as its factorization.

265688047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 46.

The square root of 265688047 is about 16299.9400919144. The cubic root of 265688047 is about 642.8712521795.

The spelling of 265688047 in words is "two hundred sixty-five million, six hundred eighty-eight thousand, forty-seven".