765541013 has 2 divisors, whose sum is σ = 765541014. Its totient is φ = 765541012.

The previous prime is 765541009. The next prime is 765541031. The reversal of 765541013 is 310145567.

765541013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (765541031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 586463089 + 179077924 = 24217^2 + 13382^2 .

It is a cyclic number.

It is not a de Polignac number, because 765541013 - 2² = 765541009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (765541003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382770506 + 382770507.

It is an arithmetic number, because the mean of its divisors is an integer number (382770507).

Almost surely, 2^765541013 is an apocalyptic number.

It is an amenable number.

765541013 is a deficient number, since it is larger than the sum of its proper divisors (1).

765541013 is an equidigital number, since it uses as much as digits as its factorization.

765541013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 765541013 is about 27668.4118264855. The cubic root of 765541013 is about 914.7929749509.

The spelling of 765541013 in words is "seven hundred sixty-five million, five hundred forty-one thousand, thirteen".