68338291 has 16 divisors (see below), whose sum is σ = 82278400. Its totient is φ = 56677320.

The previous prime is 68338271. The next prime is 68338301. The reversal of 68338291 is 19283386.

It is a de Polignac number, because none of the positive numbers 2^k-68338291 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68338241) 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, 7420 + ... + 13846.

It is an arithmetic number, because the mean of its divisors is an integer number (5142400).

Almost surely, 2^68338291 is an apocalyptic number.

68338291 is a deficient number, since it is larger than the sum of its proper divisors (13940109).

68338291 is an equidigital number, since it uses as much as digits as its factorization.

68338291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6479 (or 6465 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 68338291 is about 8266.6977082751. The cubic root of 68338291 is about 408.8412473236.

The spelling of 68338291 in words is "sixty-eight million, three hundred thirty-eight thousand, two hundred ninety-one".