678416947487 has 8 divisors (see below), whose sum is σ = 680109066000. Its totient is φ = 676724992704.

The previous prime is 678416947469. The next prime is 678416947501. The reversal of 678416947487 is 784749614876.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-678416947487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 678416947487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678416943487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16546889 + ... + 16587837.

It is an arithmetic number, because the mean of its divisors is an integer number (85013633250).

Almost surely, 2^678416947487 is an apocalyptic number.

678416947487 is a deficient number, since it is larger than the sum of its proper divisors (1692118513).

678416947487 is a wasteful number, since it uses less digits than its factorization.

678416947487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81865.

The product of its digits is 455196672, while the sum is 71.

The spelling of 678416947487 in words is "six hundred seventy-eight billion, four hundred sixteen million, nine hundred forty-seven thousand, four hundred eighty-seven".