68646464686 has 8 divisors (see below), whose sum is σ = 102980126664. Its totient is φ = 34319755800.

The previous prime is 68646464683. The next prime is 68646464687.

It is a happy number.

68646464686 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×68646464686² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68646464683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713520 + ... + 1753123.

It is an arithmetic number, because the mean of its divisors is an integer number (12872515833).

Almost surely, 2^68646464686 is an apocalyptic number.

68646464686 is a deficient number, since it is larger than the sum of its proper divisors (34333661978).

68646464686 is a wasteful number, since it uses less digits than its factorization.

68646464686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476546.

The product of its digits is 191102976, while the sum is 64.

The spelling of 68646464686 in words is "sixty-eight billion, six hundred forty-six million, four hundred sixty-four thousand, six hundred eighty-six".