5647 has 2 divisors, whose sum is σ = 5648. Its totient is φ = 5646.

The previous prime is 5641. The next prime is 5651. The reversal of 5647 is 7465.

It is a strong prime.

5647 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 5647 - 2³ = 5639 is a prime.

It is a nialpdrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2823 + 2824.

It is an arithmetic number, because the mean of its divisors is an integer number (2824).

2⁵⁶⁴⁷ is an apocalyptic number.

5647 is a deficient number, since it is larger than the sum of its proper divisors (1).

5647 is an equidigital number, since it uses as much as digits as its factorization.

5647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 22.

The square root of 5647 is about 75.1465235390. The cubic root of 5647 is about 17.8076220356.

Subtracting from 5647 its sum of digits (22), we obtain a square (5625 = 75²).

The spelling of 5647 in words is "five thousand, six hundred forty-seven".