6678747855 has 48 divisors (see below), whose sum is σ = 13123175520. Its totient is φ = 3114941184.

The previous prime is 6678747827. The next prime is 6678747869. The reversal of 6678747855 is 5587478766.

It is not a de Polignac number, because 6678747855 - 2⁶ = 6678747791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6678747792 and 6678747801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 289324 + ... + 311553.

It is an arithmetic number, because the mean of its divisors is an integer number (273399490).

Almost surely, 2^6678747855 is an apocalyptic number.

6678747855 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6678747855 is a deficient number, since it is larger than the sum of its proper divisors (6444427665).

6678747855 is a wasteful number, since it uses less digits than its factorization.

6678747855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600920 (or 600917 counting only the distinct ones).

The product of its digits is 79027200, while the sum is 63.

The square root of 6678747855 is about 81723.6064732829. The cubic root of 6678747855 is about 1883.2082550569.

The spelling of 6678747855 in words is "six billion, six hundred seventy-eight million, seven hundred forty-seven thousand, eight hundred fifty-five".