68718917 has 8 divisors (see below), whose sum is σ = 71793024. Its totient is φ = 65652048.

The previous prime is 68718901. The next prime is 68718929. The reversal of 68718917 is 71981786.

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 68718917 - 2⁴ = 68718901 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 (68718967) 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, 28823 + ... + 31115.

It is an arithmetic number, because the mean of its divisors is an integer number (8974128).

Almost surely, 2^68718917 is an apocalyptic number.

It is an amenable number.

68718917 is a deficient number, since it is larger than the sum of its proper divisors (3074107).

68718917 is a wasteful number, since it uses less digits than its factorization.

68718917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3619.

The product of its digits is 169344, while the sum is 47.

The square root of 68718917 is about 8289.6873885569. The cubic root of 68718917 is about 409.5988879015.

The spelling of 68718917 in words is "sixty-eight million, seven hundred eighteen thousand, nine hundred seventeen".