712678084866 has 96 divisors (see below), whose sum is σ = 1716977433600. Its totient is φ = 211817535840.

The previous prime is 712678084861. The next prime is 712678084883. The reversal of 712678084866 is 668480876217.

712678084866 is a `hidden beast` number, since 7 + 12 + 67 + 80 + 8 + 486 + 6 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (712678084861) 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 47 ways as a sum of consecutive naturals, for example, 5058915 + ... + 5197881.

It is an arithmetic number, because the mean of its divisors is an integer number (17885181600).

Almost surely, 2^712678084866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 712678084866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (858488716800).

712678084866 is an abundant number, since it is smaller than the sum of its proper divisors (1004299348734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

712678084866 is a wasteful number, since it uses less digits than its factorization.

712678084866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139484 (or 139481 counting only the distinct ones).

The product of its (nonzero) digits is 43352064, while the sum is 63.

The spelling of 712678084866 in words is "seven hundred twelve billion, six hundred seventy-eight million, eighty-four thousand, eight hundred sixty-six".