68689702761 has 16 divisors (see below), whose sum is σ = 95603577408. Its totient is φ = 43825060800.

The previous prime is 68689702759. The next prime is 68689702769. The reversal of 68689702761 is 16720798686.

It is not a de Polignac number, because 68689702761 - 2¹ = 68689702759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68689702695 and 68689702704.

It is not an unprimeable number, because it can be changed into a prime (68689702769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5065575 + ... + 5079116.

It is an arithmetic number, because the mean of its divisors is an integer number (5975223588).

Almost surely, 2^68689702761 is an apocalyptic number.

68689702761 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

68689702761 is a deficient number, since it is larger than the sum of its proper divisors (26913874647).

68689702761 is a wasteful number, since it uses less digits than its factorization.

68689702761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10144792.

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 68689702761 in words is "sixty-eight billion, six hundred eighty-nine million, seven hundred two thousand, seven hundred sixty-one".