68135701 has 2 divisors, whose sum is σ = 68135702. Its totient is φ = 68135700.

The previous prime is 68135699. The next prime is 68135731. The reversal of 68135701 is 10753186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60435076 + 7700625 = 7774^2 + 2775^2 .

It is a cyclic number.

It is not a de Polignac number, because 68135701 - 2¹ = 68135699 is a prime.

It is a super-2 number, since 2×68135701² = 9284947501522802, which contains 22 as substring.

Together with 68135699, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68135731) 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, 34067850 + 34067851.

It is an arithmetic number, because the mean of its divisors is an integer number (34067851).

Almost surely, 2^68135701 is an apocalyptic number.

It is an amenable number.

68135701 is a deficient number, since it is larger than the sum of its proper divisors (1).

68135701 is an equidigital number, since it uses as much as digits as its factorization.

68135701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 68135701 is about 8254.4352320434. The cubic root of 68135701 is about 408.4368418791.

Adding to 68135701 its reverse (10753186), we get a palindrome (78888887).

The spelling of 68135701 in words is "sixty-eight million, one hundred thirty-five thousand, seven hundred one".