768507765 has 16 divisors (see below), whose sum is σ = 1230304896. Its totient is φ = 409640000.

The previous prime is 768507749. The next prime is 768507767. The reversal of 768507765 is 567705867.

It is not a de Polignac number, because 768507765 - 2⁴ = 768507749 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768507767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15040 + ... + 41990.

It is an arithmetic number, because the mean of its divisors is an integer number (76894056).

Almost surely, 2^768507765 is an apocalyptic number.

It is an amenable number.

768507765 is a deficient number, since it is larger than the sum of its proper divisors (461797131).

768507765 is a wasteful number, since it uses less digits than its factorization.

768507765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28860.

The product of its (nonzero) digits is 2469600, while the sum is 51.

The square root of 768507765 is about 27721.9726029733. The cubic root of 768507765 is about 915.9731710486.

The spelling of 768507765 in words is "seven hundred sixty-eight million, five hundred seven thousand, seven hundred sixty-five".