765520973 has 12 divisors (see below), whose sum is σ = 891042012. Its totient is φ = 655764480.

The previous prime is 765520969. The next prime is 765520979. The reversal of 765520973 is 379025567.

765520973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 533933449 + 231587524 = 23107^2 + 15218^2 .

It is not a de Polignac number, because 765520973 - 2² = 765520969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765520979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101261 + ... + 108557.

It is an arithmetic number, because the mean of its divisors is an integer number (74253501).

Almost surely, 2^765520973 is an apocalyptic number.

It is an amenable number.

765520973 is a deficient number, since it is larger than the sum of its proper divisors (125521039).

765520973 is a wasteful number, since it uses less digits than its factorization.

765520973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9452 (or 9445 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 44.

The square root of 765520973 is about 27668.0496782842. The cubic root of 765520973 is about 914.7849925303.

The spelling of 765520973 in words is "seven hundred sixty-five million, five hundred twenty thousand, nine hundred seventy-three".