5563681 has 4 divisors (see below), whose sum is σ = 5587200. Its totient is φ = 5540164.

The previous prime is 5563673. The next prime is 5563697. The reversal of 5563681 is 1863655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5563681 - 2³ = 5563673 is a prime.

It is a super-2 number, since 2×5563681² = 61909092539522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5563651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11401 + ... + 11878.

It is an arithmetic number, because the mean of its divisors is an integer number (1396800).

Almost surely, 2^5563681 is an apocalyptic number.

It is an amenable number.

5563681 is a deficient number, since it is larger than the sum of its proper divisors (23519).

5563681 is a wasteful number, since it uses less digits than its factorization.

5563681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23518.

The product of its digits is 21600, while the sum is 34.

The square root of 5563681 is about 2358.7456412254. The cubic root of 5563681 is about 177.1960652004.

It can be divided in two parts, 55 and 63681, that added together give a palindrome (63736).

The spelling of 5563681 in words is "five million, five hundred sixty-three thousand, six hundred eighty-one".