68008013 has 8 divisors (see below), whose sum is σ = 69714048. Its totient is φ = 66312864.

The previous prime is 68008009. The next prime is 68008021. The reversal of 68008013 is 31080086.

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

It is not a de Polignac number, because 68008013 - 2² = 68008009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68008093) 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, 10745 + ... + 15857.

It is an arithmetic number, because the mean of its divisors is an integer number (8714256).

Almost surely, 2^68008013 is an apocalyptic number.

It is an amenable number.

68008013 is a deficient number, since it is larger than the sum of its proper divisors (1706035).

68008013 is a wasteful number, since it uses less digits than its factorization.

68008013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5443.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 68008013 is about 8246.6970964138. The cubic root of 68008013 is about 408.1815420632.

Adding to 68008013 its reverse (31080086), we get a palindrome (99088099).

The spelling of 68008013 in words is "sixty-eight million, eight thousand, thirteen".