68668017 has 8 divisors (see below), whose sum is σ = 99880800. Its totient is φ = 41616960.

The previous prime is 68668013. The next prime is 68668043. The reversal of 68668017 is 71086686.

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

It is not a de Polignac number, because 68668017 - 2² = 68668013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68668017.

It is not an unprimeable number, because it can be changed into a prime (68668013) 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, 1040392 + ... + 1040457.

It is an arithmetic number, because the mean of its divisors is an integer number (12485100).

Almost surely, 2^68668017 is an apocalyptic number.

It is an amenable number.

68668017 is a deficient number, since it is larger than the sum of its proper divisors (31212783).

68668017 is a wasteful number, since it uses less digits than its factorization.

68668017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080863.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 68668017 is about 8286.6167402626. The cubic root of 68668017 is about 409.4977331592.

The spelling of 68668017 in words is "sixty-eight million, six hundred sixty-eight thousand, seventeen".