5664481 has 4 divisors (see below), whose sum is σ = 5771412. Its totient is φ = 5557552.

The previous prime is 5664479. The next prime is 5664493. The reversal of 5664481 is 1844665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4064256 + 1600225 = 2016^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 5664481 - 2¹ = 5664479 is a prime.

It is a super-2 number, since 2×5664481² = 64172689998722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5664401) 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 in 3 ways as a sum of consecutive naturals, for example, 53386 + ... + 53491.

It is an arithmetic number, because the mean of its divisors is an integer number (1442853).

Almost surely, 2^5664481 is an apocalyptic number.

It is an amenable number.

5664481 is a deficient number, since it is larger than the sum of its proper divisors (106931).

5664481 is a wasteful number, since it uses less digits than its factorization.

5664481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106930.

The product of its digits is 23040, while the sum is 34.

The square root of 5664481 is about 2380.0170167459. The cubic root of 5664481 is about 178.2597835306.

It can be divided in two parts, 56644 and 81, that multiplied together give a square (4588164 = 2142²).

The spelling of 5664481 in words is "five million, six hundred sixty-four thousand, four hundred eighty-one".