68775289 has 8 divisors (see below), whose sum is σ = 75316032. Its totient is φ = 62282640.

The previous prime is 68775283. The next prime is 68775323. The reversal of 68775289 is 98257786.

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

It is a cyclic number.

It is not a de Polignac number, because 68775289 - 2⁹ = 68774777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68775283) 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, 8994 + ... + 14779.

It is an arithmetic number, because the mean of its divisors is an integer number (9414504).

Almost surely, 2^68775289 is an apocalyptic number.

It is an amenable number.

68775289 is a deficient number, since it is larger than the sum of its proper divisors (6540743).

68775289 is a wasteful number, since it uses less digits than its factorization.

68775289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24047.

The product of its digits is 1693440, while the sum is 52.

The square root of 68775289 is about 8293.0868197554. The cubic root of 68775289 is about 409.7108589988.

The spelling of 68775289 in words is "sixty-eight million, seven hundred seventy-five thousand, two hundred eighty-nine".