68889689 has 8 divisors (see below), whose sum is σ = 75548160. Its totient is φ = 62297200.

The previous prime is 68889683. The next prime is 68889697. The reversal of 68889689 is 98698886.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68889689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68889683) 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, 14294 + ... + 18495.

It is an arithmetic number, because the mean of its divisors is an integer number (9443520).

Almost surely, 2^68889689 is an apocalyptic number.

It is an amenable number.

68889689 is a deficient number, since it is larger than the sum of its proper divisors (6658471).

68889689 is a wasteful number, since it uses less digits than its factorization.

68889689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32991.

The product of its digits is 11943936, while the sum is 62.

The square root of 68889689 is about 8299.9812650391. The cubic root of 68889689 is about 409.9379025525.

The spelling of 68889689 in words is "sixty-eight million, eight hundred eighty-nine thousand, six hundred eighty-nine".