6663850 has 12 divisors (see below), whose sum is σ = 12394854. Its totient is φ = 2665520.

The previous prime is 6663841. The next prime is 6663857. The reversal of 6663850 is 583666.

It can be written as a sum of positive squares in 3 ways, for example, as 4678569 + 1985281 = 2163^2 + 1409^2 .

It is not an unprimeable number, because it can be changed into a prime (6663857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66589 + ... + 66688.

Almost surely, 2^6663850 is an apocalyptic number.

6663850 is a deficient number, since it is larger than the sum of its proper divisors (5731004).

6663850 is a wasteful number, since it uses less digits than its factorization.

6663850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133289 (or 133284 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 6663850 is about 2581.4433946922. The cubic root of 6663850 is about 188.1806961943.

The spelling of 6663850 in words is "six million, six hundred sixty-three thousand, eight hundred fifty".