266879047 has 2 divisors, whose sum is σ = 266879048. Its totient is φ = 266879046.

The previous prime is 266879029. The next prime is 266879069. The reversal of 266879047 is 740978662.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266879047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266879017) 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, 133439523 + 133439524.

It is an arithmetic number, because the mean of its divisors is an integer number (133439524).

Almost surely, 2^266879047 is an apocalyptic number.

266879047 is a deficient number, since it is larger than the sum of its proper divisors (1).

266879047 is an equidigital number, since it uses as much as digits as its factorization.

266879047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 266879047 is about 16336.4331174219. The cubic root of 266879047 is about 643.8304201916.

The spelling of 266879047 in words is "two hundred sixty-six million, eight hundred seventy-nine thousand, forty-seven".