678416947489 has 8 divisors (see below), whose sum is σ = 714195080000. Its totient is φ = 642646012752.

The previous prime is 678416947469. The next prime is 678416947501. The reversal of 678416947489 is 984749614876.

678416947489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 678416947489 - 2³⁵ = 644057209121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678416947469) 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, 1605429 + ... + 1983490.

It is an arithmetic number, because the mean of its divisors is an integer number (89274385000).

Almost surely, 2^678416947489 is an apocalyptic number.

It is an amenable number.

678416947489 is a deficient number, since it is larger than the sum of its proper divisors (35778132511).

678416947489 is a wasteful number, since it uses less digits than its factorization.

678416947489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3598887.

The product of its digits is 585252864, while the sum is 73.

The spelling of 678416947489 in words is "six hundred seventy-eight billion, four hundred sixteen million, nine hundred forty-seven thousand, four hundred eighty-nine".