68680717 has 8 divisors (see below), whose sum is σ = 81024512. Its totient is φ = 56970000.

The previous prime is 68680681. The next prime is 68680721. The reversal of 68680717 is 71708686.

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 68680717 - 2¹⁵ = 68647949 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 (68680727) 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, 158034 + ... + 158467.

It is an arithmetic number, because the mean of its divisors is an integer number (10128064).

Almost surely, 2^68680717 is an apocalyptic number.

It is an amenable number.

68680717 is a deficient number, since it is larger than the sum of its proper divisors (12343795).

68680717 is a wasteful number, since it uses less digits than its factorization.

68680717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316539.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 68680717 is about 8287.3830006824. The cubic root of 68680717 is about 409.5229768406.

The spelling of 68680717 in words is "sixty-eight million, six hundred eighty thousand, seven hundred seventeen".