68634843686 has 16 divisors (see below), whose sum is σ = 108403617600. Its totient is φ = 32501398248.

The previous prime is 68634843677. The next prime is 68634843709.

It is a happy number.

68634843686 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145496 + ... + 398043.

It is an arithmetic number, because the mean of its divisors is an integer number (6775226100).

Almost surely, 2^68634843686 is an apocalyptic number.

68634843686 is a deficient number, since it is larger than the sum of its proper divisors (39768773914).

68634843686 is a wasteful number, since it uses less digits than its factorization.

68634843686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546883.

The product of its digits is 95551488, while the sum is 62.

The spelling of 68634843686 in words is "sixty-eight billion, six hundred thirty-four million, eight hundred forty-three thousand, six hundred eighty-six".