266668799 has 2 divisors, whose sum is σ = 266668800. Its totient is φ = 266668798.

The previous prime is 266668793. The next prime is 266668823. The reversal of 266668799 is 997866662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266668799 - 2²⁴ = 249891583 is a prime.

It is a super-2 number, since 2×266668799² = 142224496720204802, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266668793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133334399 + 133334400.

It is an arithmetic number, because the mean of its divisors is an integer number (133334400).

Almost surely, 2^266668799 is an apocalyptic number.

266668799 is a deficient number, since it is larger than the sum of its proper divisors (1).

266668799 is an equidigital number, since it uses as much as digits as its factorization.

266668799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 59.

The square root of 266668799 is about 16329.9969075319. The cubic root of 266668799 is about 643.6613053535.

The spelling of 266668799 in words is "two hundred sixty-six million, six hundred sixty-eight thousand, seven hundred ninety-nine".