266906897 has 2 divisors, whose sum is σ = 266906898. Its totient is φ = 266906896.

The previous prime is 266906873. The next prime is 266906917. The reversal of 266906897 is 798609662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222337921 + 44568976 = 14911^2 + 6676^2 .

It is a cyclic number.

It is not a de Polignac number, because 266906897 - 2⁶ = 266906833 is a prime.

It is not a weakly prime, because it can be changed into another prime (266906837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133453448 + 133453449.

It is an arithmetic number, because the mean of its divisors is an integer number (133453449).

Almost surely, 2^266906897 is an apocalyptic number.

It is an amenable number.

266906897 is a deficient number, since it is larger than the sum of its proper divisors (1).

266906897 is an equidigital number, since it uses as much as digits as its factorization.

266906897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 266906897 is about 16337.2854844371. The cubic root of 266906897 is about 643.8528149228.

The spelling of 266906897 in words is "two hundred sixty-six million, nine hundred six thousand, eight hundred ninety-seven".