68331997 has 8 divisors (see below), whose sum is σ = 69055200. Its totient is φ = 67612944.

The previous prime is 68331947. The next prime is 68332001. The reversal of 68331997 is 79913386.

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 68331997 - 2¹¹ = 68329949 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 (68331947) 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 7 ways as a sum of consecutive naturals, for example, 40158 + ... + 41824.

It is an arithmetic number, because the mean of its divisors is an integer number (8631900).

Almost surely, 2^68331997 is an apocalyptic number.

It is an amenable number.

68331997 is a deficient number, since it is larger than the sum of its proper divisors (723203).

68331997 is a wasteful number, since it uses less digits than its factorization.

68331997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075.

The product of its digits is 244944, while the sum is 46.

The square root of 68331997 is about 8266.3170154549. The cubic root of 68331997 is about 408.8286954255.

The spelling of 68331997 in words is "sixty-eight million, three hundred thirty-one thousand, nine hundred ninety-seven".