6661028 has 24 divisors (see below), whose sum is σ = 12991104. Its totient is φ = 2962400.

The previous prime is 6661021. The next prime is 6661037. The reversal of 6661028 is 8201666.

It is not an unprimeable number, because it can be changed into a prime (6661021) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 458 + ... + 3678.

It is an arithmetic number, because the mean of its divisors is an integer number (541296).

Almost surely, 2^6661028 is an apocalyptic number.

It is an amenable number.

6661028 is a deficient number, since it is larger than the sum of its proper divisors (6330076).

6661028 is a wasteful number, since it uses less digits than its factorization.

6661028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283 (or 3281 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 6661028 is about 2580.8967433820. The cubic root of 6661028 is about 188.1541289244.

The spelling of 6661028 in words is "six million, six hundred sixty-one thousand, twenty-eight".