68616830681 has 8 divisors (see below), whose sum is σ = 80948888064. Its totient is φ = 56917186560.

The previous prime is 68616830671. The next prime is 68616830701. The reversal of 68616830681 is 18603861686.

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 68616830681 - 2¹⁰ = 68616829657 is a prime.

It is a super-2 number, since 2×68616830681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68616830671) 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, 158103080 + ... + 158103513.

It is an arithmetic number, because the mean of its divisors is an integer number (10118611008).

Almost surely, 2^68616830681 is an apocalyptic number.

It is an amenable number.

68616830681 is a deficient number, since it is larger than the sum of its proper divisors (12332057383).

68616830681 is a wasteful number, since it uses less digits than its factorization.

68616830681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316206631.

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 68616830681 in words is "sixty-eight billion, six hundred sixteen million, eight hundred thirty thousand, six hundred eighty-one".