766668311 has 2 divisors, whose sum is σ = 766668312. Its totient is φ = 766668310.

The previous prime is 766668299. The next prime is 766668323. The reversal of 766668311 is 113866667.

It is a balanced prime because it is at equal distance from previous prime (766668299) and next prime (766668323).

It is a cyclic number.

It is not a de Polignac number, because 766668311 - 2⁶ = 766668247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766668341) 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, 383334155 + 383334156.

It is an arithmetic number, because the mean of its divisors is an integer number (383334156).

Almost surely, 2^766668311 is an apocalyptic number.

766668311 is a deficient number, since it is larger than the sum of its proper divisors (1).

766668311 is an equidigital number, since it uses as much as digits as its factorization.

766668311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 766668311 is about 27688.7759028817. The cubic root of 766668311 is about 915.2417810897.

The spelling of 766668311 in words is "seven hundred sixty-six million, six hundred sixty-eight thousand, three hundred eleven".