5563866 has 32 divisors (see below), whose sum is σ = 13874688. Its totient is φ = 1445040.

The previous prime is 5563843. The next prime is 5563919. The reversal of 5563866 is 6683655.

5563866 = T₁₄ + T₁₅ + ... + T₃₂₁.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5560 + ... + 6483.

It is an arithmetic number, because the mean of its divisors is an integer number (433584).

Almost surely, 2^5563866 is an apocalyptic number.

5563866 is an abundant number, since it is smaller than the sum of its proper divisors (8310822).

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

5563866 is a wasteful number, since it uses less digits than its factorization.

5563866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12066.

The product of its digits is 129600, while the sum is 39.

The square root of 5563866 is about 2358.7848566582. The cubic root of 5563866 is about 177.1980291825.

The spelling of 5563866 in words is "five million, five hundred sixty-three thousand, eight hundred sixty-six".