68799131 has 2 divisors, whose sum is σ = 68799132. Its totient is φ = 68799130.

The previous prime is 68799121. The next prime is 68799139. The reversal of 68799131 is 13199786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68799131 - 2⁶ = 68799067 is a prime.

It is a super-3 number, since 3×68799131³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (68799139) 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 as a sum of consecutive naturals, namely, 34399565 + 34399566.

It is an arithmetic number, because the mean of its divisors is an integer number (34399566).

Almost surely, 2^68799131 is an apocalyptic number.

68799131 is a deficient number, since it is larger than the sum of its proper divisors (1).

68799131 is an equidigital number, since it uses as much as digits as its factorization.

68799131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 44.

The square root of 68799131 is about 8294.5241575391. The cubic root of 68799131 is about 409.7581976959.

The spelling of 68799131 in words is "sixty-eight million, seven hundred ninety-nine thousand, one hundred thirty-one".