68781335 has 16 divisors (see below), whose sum is σ = 96879936. Its totient is φ = 45888768.

The previous prime is 68781331. The next prime is 68781341. The reversal of 68781335 is 53318786.

It is a cyclic number.

It is not a de Polignac number, because 68781335 - 2² = 68781331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68781292 and 68781301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68781331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25262 + ... + 27851.

It is an arithmetic number, because the mean of its divisors is an integer number (6054996).

Almost surely, 2^68781335 is an apocalyptic number.

68781335 is a deficient number, since it is larger than the sum of its proper divisors (28098601).

68781335 is a wasteful number, since it uses less digits than its factorization.

68781335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53162.

The product of its digits is 120960, while the sum is 41.

The square root of 68781335 is about 8293.4513322259. The cubic root of 68781335 is about 409.7228644700.

The spelling of 68781335 in words is "sixty-eight million, seven hundred eighty-one thousand, three hundred thirty-five".