765845489 has 4 divisors (see below), whose sum is σ = 767029824. Its totient is φ = 764661156.

The previous prime is 765845477. The next prime is 765845567. The reversal of 765845489 is 984548567.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984548567 = 18253 ⋅53939.

It is a cyclic number.

It is not a de Polignac number, because 765845489 - 2⁴ = 765845473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765845449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591197 + ... + 592490.

It is an arithmetic number, because the mean of its divisors is an integer number (191757456).

Almost surely, 2^765845489 is an apocalyptic number.

It is an amenable number.

765845489 is a deficient number, since it is larger than the sum of its proper divisors (1184335).

765845489 is a wasteful number, since it uses less digits than its factorization.

765845489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184334.

The product of its digits is 9676800, while the sum is 56.

The square root of 765845489 is about 27673.9135107415. The cubic root of 765845489 is about 914.9142380327.

The spelling of 765845489 in words is "seven hundred sixty-five million, eight hundred forty-five thousand, four hundred eighty-nine".