5663689 has 2 divisors, whose sum is σ = 5663690. Its totient is φ = 5663688.

The previous prime is 5663657. The next prime is 5663759. The reversal of 5663689 is 9863665.

5663689 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5405625 + 258064 = 2325^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 5663689 - 2⁵ = 5663657 is a prime.

5663689 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5663089) 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 as a sum of consecutive naturals, namely, 2831844 + 2831845.

It is an arithmetic number, because the mean of its divisors is an integer number (2831845).

Almost surely, 2^5663689 is an apocalyptic number.

It is an amenable number.

5663689 is a deficient number, since it is larger than the sum of its proper divisors (1).

5663689 is an equidigital number, since it uses as much as digits as its factorization.

5663689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 43.

The square root of 5663689 is about 2379.8506255646. The cubic root of 5663689 is about 178.2514751302.

The spelling of 5663689 in words is "five million, six hundred sixty-three thousand, six hundred eighty-nine".