68321717 has 8 divisors (see below), whose sum is σ = 69780096. Its totient is φ = 66869712.

The previous prime is 68321713. The next prime is 68321719. The reversal of 68321717 is 71712386.

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 68321717 - 2² = 68321713 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 (68321713) 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, 24488 + ... + 27134.

It is an arithmetic number, because the mean of its divisors is an integer number (8722512).

Almost surely, 2^68321717 is an apocalyptic number.

It is an amenable number.

68321717 is a deficient number, since it is larger than the sum of its proper divisors (1458379).

68321717 is a wasteful number, since it uses less digits than its factorization.

68321717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187.

The product of its digits is 14112, while the sum is 35.

The square root of 68321717 is about 8265.6951915734. The cubic root of 68321717 is about 408.8081927330.

The spelling of 68321717 in words is "sixty-eight million, three hundred twenty-one thousand, seven hundred seventeen".