68664499446686 has 48 divisors (see below), whose sum is σ = 124256708183808. Its totient is φ = 28197294746400.

The previous prime is 68664499446559. The next prime is 68664499446737.

68664499446686 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 68664499446598 and 68664499446607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196294700 + ... + 196644191.

It is an arithmetic number, because the mean of its divisors is an integer number (2588681420496).

Almost surely, 2^{68664499446686} is an apocalyptic number.

68664499446686 is a deficient number, since it is larger than the sum of its proper divisors (55592208737122).

68664499446686 is a wasteful number, since it uses less digits than its factorization.

68664499446686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392938977 (or 392938964 counting only the distinct ones).

The product of its digits is 61917364224, while the sum is 86.

The spelling of 68664499446686 in words is "sixty-eight trillion, six hundred sixty-four billion, four hundred ninety-nine million, four hundred forty-six thousand, six hundred eighty-six".