765480889 has 4 divisors (see below), whose sum is σ = 772635024. Its totient is φ = 758326756.

The previous prime is 765480857. The next prime is 765480899. The reversal of 765480889 is 988084567.

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.

It is a cyclic number.

It is not a de Polignac number, because 765480889 - 2⁵ = 765480857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765480899) 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, 3576907 + ... + 3577120.

It is an arithmetic number, because the mean of its divisors is an integer number (193158756).

Almost surely, 2^765480889 is an apocalyptic number.

It is an amenable number.

765480889 is a deficient number, since it is larger than the sum of its proper divisors (7154135).

765480889 is a wasteful number, since it uses less digits than its factorization.

765480889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7154134.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The square root of 765480889 is about 27667.3252953732. The cubic root of 765480889 is about 914.7690256777.

The spelling of 765480889 in words is "seven hundred sixty-five million, four hundred eighty thousand, eight hundred eighty-nine".