266570099 has 2 divisors, whose sum is σ = 266570100. Its totient is φ = 266570098.

The previous prime is 266570027. The next prime is 266570137. The reversal of 266570099 is 990075662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266570099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (266570009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133285049 + 133285050.

It is an arithmetic number, because the mean of its divisors is an integer number (133285050).

Almost surely, 2^266570099 is an apocalyptic number.

266570099 is a deficient number, since it is larger than the sum of its proper divisors (1).

266570099 is an equidigital number, since it uses as much as digits as its factorization.

266570099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 266570099 is about 16326.9745819610. The cubic root of 266570099 is about 643.5818844757.

The spelling of 266570099 in words is "two hundred sixty-six million, five hundred seventy thousand, ninety-nine".