765540065 has 8 divisors (see below), whose sum is σ = 923265600. Its totient is φ = 609353712.

The previous prime is 765540049. The next prime is 765540067. The reversal of 765540065 is 560045567.

765540065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 765540065 - 2⁴ = 765540049 is a prime.

It is a super-2 number, since 2×765540065² = 1172103182240408450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (765540067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383699 + ... + 385688.

It is an arithmetic number, because the mean of its divisors is an integer number (115408200).

Almost surely, 2^765540065 is an apocalyptic number.

It is an amenable number.

765540065 is a deficient number, since it is larger than the sum of its proper divisors (157725535).

765540065 is a wasteful number, since it uses less digits than its factorization.

765540065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769591.

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 765540065 is about 27668.3946950306. The cubic root of 765540065 is about 914.7925973426.

The spelling of 765540065 in words is "seven hundred sixty-five million, five hundred forty thousand, sixty-five".