68130811 has 16 divisors (see below), whose sum is σ = 79704000. Its totient is φ = 57028608.

The previous prime is 68130809. The next prime is 68130833. The reversal of 68130811 is 11803186.

68130811 = T₄₁₁ + T₄₁₂ + ... + T₇₈₁.

It is a happy number.

It is not a de Polignac number, because 68130811 - 2¹ = 68130809 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 68130811.

It is not an unprimeable number, because it can be changed into a prime (68130841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151515 + ... + 151963.

It is an arithmetic number, because the mean of its divisors is an integer number (4981500).

Almost surely, 2^68130811 is an apocalyptic number.

68130811 is a deficient number, since it is larger than the sum of its proper divisors (11573189).

68130811 is a wasteful number, since it uses less digits than its factorization.

68130811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 68130811 is about 8254.1390223330. The cubic root of 68130811 is about 408.4270706730.

Adding to 68130811 its reverse (11803186), we get a palindrome (79933997).

The spelling of 68130811 in words is "sixty-eight million, one hundred thirty thousand, eight hundred eleven".