68590009 has 8 divisors (see below), whose sum is σ = 69788808. Its totient is φ = 67401600.

The previous prime is 68589991. The next prime is 68590013. The reversal of 68590009 is 90009586.

It can be written as a sum of positive squares in 4 ways, for example, as 43560000 + 25030009 = 6600^2 + 5003^2 .

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 68590009 - 2¹³ = 68581817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68590009.

It is not an unprimeable number, because it can be changed into a prime (68590099) 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, 11359 + ... + 16315.

It is an arithmetic number, because the mean of its divisors is an integer number (8723601).

Almost surely, 2^68590009 is an apocalyptic number.

It is an amenable number.

68590009 is a deficient number, since it is larger than the sum of its proper divisors (1198799).

68590009 is a wasteful number, since it uses less digits than its factorization.

68590009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5195.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 68590009 is about 8281.9085360803. The cubic root of 68590009 is about 409.3426090099.

The spelling of 68590009 in words is "sixty-eight million, five hundred ninety thousand, nine".