766240757 has 2 divisors, whose sum is σ = 766240758. Its totient is φ = 766240756.

The previous prime is 766240753. The next prime is 766240763. The reversal of 766240757 is 757042667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 765684241 + 556516 = 27671^2 + 746^2 .

It is a cyclic number.

It is not a de Polignac number, because 766240757 - 2² = 766240753 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766240753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383120378 + 383120379.

It is an arithmetic number, because the mean of its divisors is an integer number (383120379).

Almost surely, 2^766240757 is an apocalyptic number.

It is an amenable number.

766240757 is a deficient number, since it is larger than the sum of its proper divisors (1).

766240757 is an equidigital number, since it uses as much as digits as its factorization.

766240757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 44.

The square root of 766240757 is about 27681.0541164891. The cubic root of 766240757 is about 915.0716127374.

The spelling of 766240757 in words is "seven hundred sixty-six million, two hundred forty thousand, seven hundred fifty-seven".