68135333 has 6 divisors (see below), whose sum is σ = 79259526. Its totient is φ = 58401672.

The previous prime is 68135323. The next prime is 68135341. The reversal of 68135333 is 33353186.

It can be written as a sum of positive squares in only one way, i.e., 59938564 + 8196769 = 7742^2 + 2863^2 .

It is not a de Polignac number, because 68135333 - 2⁸ = 68135077 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 68135333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68135323) 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 5 ways as a sum of consecutive naturals, for example, 695210 + ... + 695307.

It is an arithmetic number, because the mean of its divisors is an integer number (13209921).

Almost surely, 2^68135333 is an apocalyptic number.

It is an amenable number.

68135333 is a deficient number, since it is larger than the sum of its proper divisors (11124193).

68135333 is a wasteful number, since it uses less digits than its factorization.

68135333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390531 (or 1390524 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 68135333 is about 8254.4129409668. The cubic root of 68135333 is about 408.4361065572.

Subtracting from 68135333 its sum of digits (32), we obtain a triangular number (68135301 = T₁₁₆₇₃).

The spelling of 68135333 in words is "sixty-eight million, one hundred thirty-five thousand, three hundred thirty-three".