6782566728 has 32 divisors (see below), whose sum is σ = 19378762560. Its totient is φ = 1937876160.

The previous prime is 6782566723. The next prime is 6782566741. The reversal of 6782566728 is 8276652876.

It is a happy number.

It is a super-2 number, since 2×6782566728² = 92006422839545251968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6782566723) 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, 20186043 + ... + 20186378.

It is an arithmetic number, because the mean of its divisors is an integer number (605586330).

Almost surely, 2^6782566728 is an apocalyptic number.

It is an amenable number.

6782566728 is an abundant number, since it is smaller than the sum of its proper divisors (12596195832).

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

6782566728 is a wasteful number, since it uses less digits than its factorization.

6782566728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40372437 (or 40372433 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 57.

The square root of 6782566728 is about 82356.3399381007. The cubic root of 6782566728 is about 1892.9160707089.

The spelling of 6782566728 in words is "six billion, seven hundred eighty-two million, five hundred sixty-six thousand, seven hundred twenty-eight".