68516789 has 8 divisors (see below), whose sum is σ = 77157120. Its totient is φ = 60278400.

The previous prime is 68516761. The next prime is 68516801. The reversal of 68516789 is 98761586.

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 not a de Polignac number, because 68516789 - 2¹² = 68512693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68516719) 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, 100124 + ... + 100805.

It is an arithmetic number, because the mean of its divisors is an integer number (9644640).

Almost surely, 2^68516789 is an apocalyptic number.

It is an amenable number.

68516789 is a deficient number, since it is larger than the sum of its proper divisors (8640331).

68516789 is a wasteful number, since it uses less digits than its factorization.

68516789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200971.

The product of its digits is 725760, while the sum is 50.

The square root of 68516789 is about 8277.4868770660. The cubic root of 68516789 is about 409.1968990750.

The spelling of 68516789 in words is "sixty-eight million, five hundred sixteen thousand, seven hundred eighty-nine".