6681578 has 16 divisors (see below), whose sum is σ = 11171520. Its totient is φ = 2978496.

The previous prime is 6681557. The next prime is 6681581. The reversal of 6681578 is 8751866.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4526 + ... + 5817.

It is an arithmetic number, because the mean of its divisors is an integer number (698220).

Almost surely, 2^6681578 is an apocalyptic number.

6681578 is a deficient number, since it is larger than the sum of its proper divisors (4489942).

6681578 is a wasteful number, since it uses less digits than its factorization.

6681578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10381.

The product of its digits is 80640, while the sum is 41.

The square root of 6681578 is about 2584.8748519029. The cubic root of 6681578 is about 188.3474223064.

The spelling of 6681578 in words is "six million, six hundred eighty-one thousand, five hundred seventy-eight".