6711678840 has 64 divisors (see below), whose sum is σ = 20389939200. Its totient is φ = 1767123072.

The previous prime is 6711678793. The next prime is 6711678847. The reversal of 6711678840 is 488761176.

It is a self number, because there is not a number n which added to its sum of digits gives 6711678840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6711678847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344512 + ... + 363471.

It is an arithmetic number, because the mean of its divisors is an integer number (318592800).

Almost surely, 2^6711678840 is an apocalyptic number.

6711678840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6711678840 is an abundant number, since it is smaller than the sum of its proper divisors (13678260360).

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

6711678840 is a wasteful number, since it uses less digits than its factorization.

6711678840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708076 (or 708072 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 6711678840 is about 81924.8365271485. The cubic root of 6711678840 is about 1886.2983678999.

The spelling of 6711678840 in words is "six billion, seven hundred eleven million, six hundred seventy-eight thousand, eight hundred forty".