289215065 has 8 divisors (see below), whose sum is σ = 348876288. Its totient is φ = 230159920.

The previous prime is 289215053. The next prime is 289215071. The reversal of 289215065 is 560512982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 289215065 - 2¹⁶ = 289149529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150467 + ... + 152376.

It is an arithmetic number, because the mean of its divisors is an integer number (43609536).

Almost surely, 2^289215065 is an apocalyptic number.

It is an amenable number.

289215065 is a deficient number, since it is larger than the sum of its proper divisors (59661223).

289215065 is a wasteful number, since it uses less digits than its factorization.

289215065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303039.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 289215065 is about 17006.3242648140. The cubic root of 289215065 is about 661.3128634744.

The spelling of 289215065 in words is "two hundred eighty-nine million, two hundred fifteen thousand, sixty-five".