68135351 has 2 divisors, whose sum is σ = 68135352. Its totient is φ = 68135350.

The previous prime is 68135341. The next prime is 68135359. The reversal of 68135351 is 15353186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68135351 - 2¹⁰ = 68134327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68135359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34067675 + 34067676.

It is an arithmetic number, because the mean of its divisors is an integer number (34067676).

Almost surely, 2^68135351 is an apocalyptic number.

68135351 is a deficient number, since it is larger than the sum of its proper divisors (1).

68135351 is an equidigital number, since it uses as much as digits as its factorization.

68135351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 68135351 is about 8254.4140312926. The cubic root of 68135351 is about 408.4361425241.

It can be divided in two parts, 68135 and 351, that added together give a palindrome (68486).

The spelling of 68135351 in words is "sixty-eight million, one hundred thirty-five thousand, three hundred fifty-one".