68089289 has 4 divisors (see below), whose sum is σ = 68579280. Its totient is φ = 67599300.

The previous prime is 68089279. The next prime is 68089291. The reversal of 68089289 is 98298086.

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 a de Polignac number, because none of the positive numbers 2^k-68089289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68089279) 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, 244787 + ... + 245064.

It is an arithmetic number, because the mean of its divisors is an integer number (17144820).

Almost surely, 2^68089289 is an apocalyptic number.

It is an amenable number.

68089289 is a deficient number, since it is larger than the sum of its proper divisors (489991).

68089289 is a wasteful number, since it uses less digits than its factorization.

68089289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489990.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 68089289 is about 8251.6234160315. The cubic root of 68089289 is about 408.3440824974.

The spelling of 68089289 in words is "sixty-eight million, eighty-nine thousand, two hundred eighty-nine".