266087099 has 2 divisors, whose sum is σ = 266087100. Its totient is φ = 266087098.

The previous prime is 266087057. The next prime is 266087123. The reversal of 266087099 is 990780662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266087099 - 2¹² = 266083003 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (266087399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133043549 + 133043550.

It is an arithmetic number, because the mean of its divisors is an integer number (133043550).

Almost surely, 2^266087099 is an apocalyptic number.

266087099 is a deficient number, since it is larger than the sum of its proper divisors (1).

266087099 is an equidigital number, since it uses as much as digits as its factorization.

266087099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 266087099 is about 16312.1764029206. The cubic root of 266087099 is about 643.1929461510.

The spelling of 266087099 in words is "two hundred sixty-six million, eighty-seven thousand, ninety-nine".