6685072784 has 40 divisors (see below), whose sum is σ = 14682810240. Its totient is φ = 2923026048.

The previous prime is 6685072781. The next prime is 6685072789. The reversal of 6685072784 is 4872705866.

It is not an unprimeable number, because it can be changed into a prime (6685072781) 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, 841832 + ... + 849735.

It is an arithmetic number, because the mean of its divisors is an integer number (367070256).

Almost surely, 2^6685072784 is an apocalyptic number.

It is an amenable number.

6685072784 is an abundant number, since it is smaller than the sum of its proper divisors (7997737456).

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

6685072784 is a wasteful number, since it uses less digits than its factorization.

6685072784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691607 (or 1691601 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 53.

The square root of 6685072784 is about 81762.2943905074. The cubic root of 6685072784 is about 1883.8025481136.

The spelling of 6685072784 in words is "six billion, six hundred eighty-five million, seventy-two thousand, seven hundred eighty-four".