5663856 has 80 divisors (see below), whose sum is σ = 16927488. Its totient is φ = 1612800.

The previous prime is 5663821. The next prime is 5663887. The reversal of 5663856 is 6583665.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 8661 + ... + 9291.

Almost surely, 2^5663856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5663856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8463744).

5663856 is an abundant number, since it is smaller than the sum of its proper divisors (11263632).

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

5663856 is a wasteful number, since it uses less digits than its factorization.

5663856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 664 counting only the distinct ones).

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

The square root of 5663856 is about 2379.8857115416. The cubic root of 5663856 is about 178.2532270922.

The spelling of 5663856 in words is "five million, six hundred sixty-three thousand, eight hundred fifty-six".