5664397 has 2 divisors, whose sum is σ = 5664398. Its totient is φ = 5664396.

The previous prime is 5664377. The next prime is 5664401. The reversal of 5664397 is 7934665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3884841 + 1779556 = 1971^2 + 1334^2 .

It is a cyclic number.

It is not a de Polignac number, because 5664397 - 2¹⁵ = 5631629 is a prime.

5664397 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5664377) 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, 2832198 + 2832199.

It is an arithmetic number, because the mean of its divisors is an integer number (2832199).

Almost surely, 2^5664397 is an apocalyptic number.

It is an amenable number.

5664397 is a deficient number, since it is larger than the sum of its proper divisors (1).

5664397 is an equidigital number, since it uses as much as digits as its factorization.

5664397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 40.

The square root of 5664397 is about 2379.9993697478. Note that the first 3 decimals coincide. The cubic root of 5664397 is about 178.2589023733.

The spelling of 5664397 in words is "five million, six hundred sixty-four thousand, three hundred ninety-seven".