68039293 has 12 divisors (see below), whose sum is σ = 79353120. Its totient is φ = 58168152.

The previous prime is 68039291. The next prime is 68039299. The reversal of 68039293 is 39293086.

It is not a de Polignac number, because 68039293 - 2¹ = 68039291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68039291) 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 11 ways as a sum of consecutive naturals, for example, 19930 + ... + 23092.

It is an arithmetic number, because the mean of its divisors is an integer number (6612760).

Almost surely, 2^68039293 is an apocalyptic number.

It is an amenable number.

68039293 is a deficient number, since it is larger than the sum of its proper divisors (11313827).

68039293 is a wasteful number, since it uses less digits than its factorization.

68039293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3616 (or 3609 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 68039293 is about 8248.5933952402. The cubic root of 68039293 is about 408.2441129332.

The spelling of 68039293 in words is "sixty-eight million, thirty-nine thousand, two hundred ninety-three".