68237813 has 24 divisors (see below), whose sum is σ = 83995200. Its totient is φ = 54286848.

The previous prime is 68237801. The next prime is 68237821. The reversal of 68237813 is 31873286.

It is a happy number.

It is not a de Polignac number, because 68237813 - 2¹⁴ = 68221429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68237413) 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 23 ways as a sum of consecutive naturals, for example, 179858 + ... + 180236.

It is an arithmetic number, because the mean of its divisors is an integer number (3499800).

Almost surely, 2^68237813 is an apocalyptic number.

It is an amenable number.

68237813 is a deficient number, since it is larger than the sum of its proper divisors (15757387).

68237813 is a wasteful number, since it uses less digits than its factorization.

68237813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 492 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 68237813 is about 8260.6181972053. The cubic root of 68237813 is about 408.6407755245.

The spelling of 68237813 in words is "sixty-eight million, two hundred thirty-seven thousand, eight hundred thirteen".