6546728 has 8 divisors (see below), whose sum is σ = 12275130. Its totient is φ = 3273360.

The previous prime is 6546689. The next prime is 6546733. The reversal of 6546728 is 8276456.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6543364 + 3364 = 2558^2 + 58^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6546691 and 6546700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409163 + ... + 409178.

Almost surely, 2^6546728 is an apocalyptic number.

It is an amenable number.

6546728 is a deficient number, since it is larger than the sum of its proper divisors (5728402).

6546728 is a wasteful number, since it uses less digits than its factorization.

6546728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818347 (or 818343 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 6546728 is about 2558.6574604663. The cubic root of 6546728 is about 187.0717027022.

The spelling of 6546728 in words is "six million, five hundred forty-six thousand, seven hundred twenty-eight".