289065688 has 32 divisors (see below), whose sum is σ = 577100160. Its totient is φ = 135267840.

The previous prime is 289065683. The next prime is 289065697. The reversal of 289065688 is 886560982.

289065688 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289065683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18745 + ... + 30487.

It is an arithmetic number, because the mean of its divisors is an integer number (18034380).

Almost surely, 2^289065688 is an apocalyptic number.

It is an amenable number.

289065688 is a deficient number, since it is larger than the sum of its proper divisors (288034472).

289065688 is a wasteful number, since it uses less digits than its factorization.

289065688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11947 (or 11943 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 52.

The square root of 289065688 is about 17001.9318902294. The cubic root of 289065688 is about 661.1989898032.

The spelling of 289065688 in words is "two hundred eighty-nine million, sixty-five thousand, six hundred eighty-eight".