68706866737 has 8 divisors (see below), whose sum is σ = 69253569000. Its totient is φ = 68162164224.

The previous prime is 68706866731. The next prime is 68706866759. The reversal of 68706866737 is 73766860786.

It can be written as a sum of positive squares in 4 ways, for example, as 43390556416 + 25316310321 = 208304^2 + 159111^2 .

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 68706866737 - 2¹¹ = 68706864689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68706866731) 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, 430912 + ... + 568417.

It is an arithmetic number, because the mean of its divisors is an integer number (8656696125).

Almost surely, 2^68706866737 is an apocalyptic number.

It is an amenable number.

68706866737 is a deficient number, since it is larger than the sum of its proper divisors (546702263).

68706866737 is a wasteful number, since it uses less digits than its factorization.

68706866737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999875.

The product of its (nonzero) digits is 85349376, while the sum is 64.

The spelling of 68706866737 in words is "sixty-eight billion, seven hundred six million, eight hundred sixty-six thousand, seven hundred thirty-seven".