765462889 has 9 divisors (see below), whose sum is σ = 778145463. Its totient is φ = 752985072.

The previous prime is 765462871. The next prime is 765462911. The reversal of 765462889 is 988264567.

The square root of 765462889 is 27667.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 434514025 + 330948864 = 20845^2 + 18192^2 .

It is not a de Polignac number, because 765462889 - 2⁹ = 765462377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765460889) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2019502 + ... + 2019880.

It is an arithmetic number, because the mean of its divisors is an integer number (86460607).

Almost surely, 2^765462889 is an apocalyptic number.

765462889 is the 27667-th square number.

765462889 is the 13834-th centered octagonal number.

It is an amenable number.

765462889 is a deficient number, since it is larger than the sum of its proper divisors (12682574).

765462889 is an frugal number, since it uses more digits than its factorization.

765462889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904 (or 452 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The cubic root of 765462889 is about 914.7618554697.

The spelling of 765462889 in words is "seven hundred sixty-five million, four hundred sixty-two thousand, eight hundred eighty-nine".