266980859 has 2 divisors, whose sum is σ = 266980860. Its totient is φ = 266980858.

The previous prime is 266980853. The next prime is 266980867. The reversal of 266980859 is 958089662.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266980859 - 2⁴ = 266980843 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 266980859.

It is not a weakly prime, because it can be changed into another prime (266980853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133490429 + 133490430.

It is an arithmetic number, because the mean of its divisors is an integer number (133490430).

Almost surely, 2^266980859 is an apocalyptic number.

266980859 is a deficient number, since it is larger than the sum of its proper divisors (1).

266980859 is an equidigital number, since it uses as much as digits as its factorization.

266980859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 266980859 is about 16339.5489227824. The cubic root of 266980859 is about 643.9122816562.

The spelling of 266980859 in words is "two hundred sixty-six million, nine hundred eighty thousand, eight hundred fifty-nine".