6780479984 has 20 divisors (see below), whose sum is σ = 13139813016. Its totient is φ = 3389560512.

The previous prime is 6780479963. The next prime is 6780479989. The reversal of 6780479984 is 4899740876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780479989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45362 + ... + 124974.

Almost surely, 2^6780479984 is an apocalyptic number.

It is an amenable number.

6780479984 is a deficient number, since it is larger than the sum of its proper divisors (6359333032).

6780479984 is a wasteful number, since it uses less digits than its factorization.

6780479984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84944 (or 84938 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 62.

The square root of 6780479984 is about 82343.6699692211. The cubic root of 6780479984 is about 1892.7219241282.

The spelling of 6780479984 in words is "six billion, seven hundred eighty million, four hundred seventy-nine thousand, nine hundred eighty-four".