68118289 has 4 divisors (see below), whose sum is σ = 68369920. Its totient is φ = 67866660.

The previous prime is 68118283. The next prime is 68118293. The reversal of 68118289 is 98281186.

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 not a de Polignac number, because 68118289 - 2²⁵ = 34563857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68118283) 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, 125409 + ... + 125950.

It is an arithmetic number, because the mean of its divisors is an integer number (17092480).

Almost surely, 2^68118289 is an apocalyptic number.

It is an amenable number.

68118289 is a deficient number, since it is larger than the sum of its proper divisors (251631).

68118289 is a wasteful number, since it uses less digits than its factorization.

68118289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251630.

The product of its digits is 55296, while the sum is 43.

The square root of 68118289 is about 8253.3804589392. The cubic root of 68118289 is about 408.4020470600.

The spelling of 68118289 in words is "sixty-eight million, one hundred eighteen thousand, two hundred eighty-nine".