6540756684 has 96 divisors (see below), whose sum is σ = 19045780992. Its totient is φ = 1697280000.

The previous prime is 6540756671. The next prime is 6540756709. The reversal of 6540756684 is 4866570456.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1199404 + ... + 1204844.

It is an arithmetic number, because the mean of its divisors is an integer number (198393552).

Almost surely, 2^6540756684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6540756684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9522890496).

6540756684 is an abundant number, since it is smaller than the sum of its proper divisors (12505024308).

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

6540756684 is a wasteful number, since it uses less digits than its factorization.

6540756684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6767 (or 6765 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 51.

The square root of 6540756684 is about 80874.9447233196. The cubic root of 6540756684 is about 1870.1480893522.

The spelling of 6540756684 in words is "six billion, five hundred forty million, seven hundred fifty-six thousand, six hundred eighty-four".