765844945 has 8 divisors (see below), whose sum is σ = 941429160. Its totient is φ = 597732480.

The previous prime is 765844897. The next prime is 765844991. The reversal of 765844945 is 549448567.

It can be written as a sum of positive squares in 4 ways, for example, as 92390544 + 673454401 = 9612^2 + 25951^2 .

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

It is not a de Polignac number, because 765844945 - 2⁷ = 765844817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 765844892 and 765844901.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1867710 + ... + 1868119.

It is an arithmetic number, because the mean of its divisors is an integer number (117678645).

Almost surely, 2^765844945 is an apocalyptic number.

It is an amenable number.

765844945 is a deficient number, since it is larger than the sum of its proper divisors (175584215).

765844945 is a wasteful number, since it uses less digits than its factorization.

765844945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3735875.

The product of its digits is 4838400, while the sum is 52.

The square root of 765844945 is about 27673.9036819889. The cubic root of 765844945 is about 914.9140214035.

The spelling of 765844945 in words is "seven hundred sixty-five million, eight hundred forty-four thousand, nine hundred forty-five".