68009811 has 16 divisors (see below), whose sum is σ = 93374208. Its totient is φ = 43999200.

The previous prime is 68009801. The next prime is 68009813. The reversal of 68009811 is 11890086.

It is not a de Polignac number, because 68009811 - 2⁵ = 68009779 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (68009813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69556 + ... + 70526.

It is an arithmetic number, because the mean of its divisors is an integer number (5835888).

Almost surely, 2^68009811 is an apocalyptic number.

68009811 is a deficient number, since it is larger than the sum of its proper divisors (25364397).

68009811 is a wasteful number, since it uses less digits than its factorization.

68009811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 68009811 is about 8246.8061090340. The cubic root of 68009811 is about 408.1851392076.

Adding to 68009811 its reverse (11890086), we get a palindrome (79899897).

The spelling of 68009811 in words is "sixty-eight million, nine thousand, eight hundred eleven".