765488890 has 16 divisors (see below), whose sum is σ = 1422328320. Its totient is φ = 296318160.

The previous prime is 765488861. The next prime is 765488947. The reversal of 765488890 is 98884567.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234350 + ... + 1234969.

It is an arithmetic number, because the mean of its divisors is an integer number (88895520).

Almost surely, 2^765488890 is an apocalyptic number.

765488890 is a deficient number, since it is larger than the sum of its proper divisors (656839430).

765488890 is a wasteful number, since it uses less digits than its factorization.

765488890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469357.

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

The square root of 765488890 is about 27667.4698879388. The cubic root of 765488890 is about 914.7722127990.

The spelling of 765488890 in words is "seven hundred sixty-five million, four hundred eighty-eight thousand, eight hundred ninety".