766066747 has 2 divisors, whose sum is σ = 766066748. Its totient is φ = 766066746.

The previous prime is 766066739. The next prime is 766066787. The reversal of 766066747 is 747660667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 766066747 - 2³ = 766066739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 766066747.

It is not a weakly prime, because it can be changed into another prime (766066787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383033373 + 383033374.

It is an arithmetic number, because the mean of its divisors is an integer number (383033374).

Almost surely, 2^766066747 is an apocalyptic number.

766066747 is a deficient number, since it is larger than the sum of its proper divisors (1).

766066747 is an equidigital number, since it uses as much as digits as its factorization.

766066747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 49.

The square root of 766066747 is about 27677.9108134989. The cubic root of 766066747 is about 915.0023378761.

The spelling of 766066747 in words is "seven hundred sixty-six million, sixty-six thousand, seven hundred forty-seven".