68239291 has 8 divisors (see below), whose sum is σ = 70815600. Its totient is φ = 65677920.

The previous prime is 68239271. The next prime is 68239313. The reversal of 68239291 is 19293286.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68239291 - 2²³ = 59850683 is a prime.

It is a super-3 number, since 3×68239291³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68239201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6045 + ... + 13153.

It is an arithmetic number, because the mean of its divisors is an integer number (8851950).

Almost surely, 2^68239291 is an apocalyptic number.

68239291 is a deficient number, since it is larger than the sum of its proper divisors (2576309).

68239291 is a wasteful number, since it uses less digits than its factorization.

68239291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7469.

The product of its digits is 46656, while the sum is 40.

The square root of 68239291 is about 8260.7076573378. The cubic root of 68239291 is about 408.6437258277.

The spelling of 68239291 in words is "sixty-eight million, two hundred thirty-nine thousand, two hundred ninety-one".