68578584668 has 24 divisors (see below), whose sum is σ = 131405885184. Its totient is φ = 31057052400.

The previous prime is 68578584661. The next prime is 68578584713. The reversal of 68578584668 is 86648587586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68578584661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2863730 + ... + 2887577.

It is an arithmetic number, because the mean of its divisors is an integer number (5475245216).

Almost surely, 2^68578584668 is an apocalyptic number.

It is an amenable number.

68578584668 is a deficient number, since it is larger than the sum of its proper divisors (62827300516).

68578584668 is a wasteful number, since it uses less digits than its factorization.

68578584668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5751593 (or 5751591 counting only the distinct ones).

The product of its digits is 619315200, while the sum is 71.

The spelling of 68578584668 in words is "sixty-eight billion, five hundred seventy-eight million, five hundred eighty-four thousand, six hundred sixty-eight".