678900066729 has 8 divisors (see below), whose sum is σ = 905205292992. Its totient is φ = 452597442480.

The previous prime is 678900066709. The next prime is 678900066769. The reversal of 678900066729 is 927660009876.

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

It is not a de Polignac number, because 678900066729 - 2⁹ = 678900066217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (678900066709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73372 + ... + 1167554.

It is an arithmetic number, because the mean of its divisors is an integer number (113150661624).

Almost surely, 2^678900066729 is an apocalyptic number.

It is an amenable number.

678900066729 is a deficient number, since it is larger than the sum of its proper divisors (226305226263).

678900066729 is a wasteful number, since it uses less digits than its factorization.

678900066729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301007.

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 678900066729 in words is "six hundred seventy-eight billion, nine hundred million, sixty-six thousand, seven hundred twenty-nine".