68865589 has 8 divisors (see below), whose sum is σ = 78525720. Its totient is φ = 59828736.

The previous prime is 68865571. The next prime is 68865617. The reversal of 68865589 is 98556886.

It can be written as a sum of positive squares in 4 ways, for example, as 8803089 + 60062500 = 2967^2 + 7750^2 .

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-68865589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68865529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155584 + ... + 156025.

It is an arithmetic number, because the mean of its divisors is an integer number (9815715).

Almost surely, 2^68865589 is an apocalyptic number.

It is an amenable number.

68865589 is a deficient number, since it is larger than the sum of its proper divisors (9660131).

68865589 is a wasteful number, since it uses less digits than its factorization.

68865589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311639.

The product of its digits is 4147200, while the sum is 55.

The square root of 68865589 is about 8298.5293275375. The cubic root of 68865589 is about 409.8900934833.

The spelling of 68865589 in words is "sixty-eight million, eight hundred sixty-five thousand, five hundred eighty-nine".