68653635686 has 32 divisors (see below), whose sum is σ = 114096314880. Its totient is φ = 30816708736.

The previous prime is 68653635649. The next prime is 68653635719.

It is a happy number.

68653635686 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 15 ways as a sum of consecutive naturals, for example, 158465 + ... + 403011.

It is an arithmetic number, because the mean of its divisors is an integer number (3565509840).

Almost surely, 2^68653635686 is an apocalyptic number.

68653635686 is a deficient number, since it is larger than the sum of its proper divisors (45442679194).

68653635686 is a wasteful number, since it uses less digits than its factorization.

68653635686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244948.

The product of its digits is 111974400, while the sum is 62.

The spelling of 68653635686 in words is "sixty-eight billion, six hundred fifty-three million, six hundred thirty-five thousand, six hundred eighty-six".