765112640 has 56 divisors (see below), whose sum is σ = 1871194632. Its totient is φ = 297768960.

The previous prime is 765112639. The next prime is 765112669. The reversal of 765112640 is 46211567.

It can be written as a sum of positive squares in 4 ways, for example, as 33085504 + 732027136 = 5752^2 + 27056^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 765112597 and 765112606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20471 + ... + 44150.

Almost surely, 2^765112640 is an apocalyptic number.

It is an amenable number.

765112640 is an abundant number, since it is smaller than the sum of its proper divisors (1106081992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

765112640 is a wasteful number, since it uses less digits than its factorization.

765112640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64675 (or 64665 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 765112640 is about 27660.6695508261. The cubic root of 765112640 is about 914.6223131922.

The spelling of 765112640 in words is "seven hundred sixty-five million, one hundred twelve thousand, six hundred forty".