68706654685 has 8 divisors (see below), whose sum is σ = 82457735256. Its totient is φ = 54958824000.

The previous prime is 68706654683. The next prime is 68706654721. The reversal of 68706654685 is 58645660786.

It can be written as a sum of positive squares in 4 ways, for example, as 1075971204 + 67630683481 = 32802^2 + 260059^2 .

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

It is not a de Polignac number, because 68706654685 - 2¹ = 68706654683 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 (68706654683) 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, 765714 + ... + 850723.

It is an arithmetic number, because the mean of its divisors is an integer number (10307216907).

Almost surely, 2^68706654685 is an apocalyptic number.

It is an amenable number.

68706654685 is a deficient number, since it is larger than the sum of its proper divisors (13751080571).

68706654685 is a wasteful number, since it uses less digits than its factorization.

68706654685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624943.

The product of its (nonzero) digits is 58060800, while the sum is 61.

The spelling of 68706654685 in words is "sixty-eight billion, seven hundred six million, six hundred fifty-four thousand, six hundred eighty-five".