6564401 has 2 divisors, whose sum is σ = 6564402. Its totient is φ = 6564400.

The previous prime is 6564359. The next prime is 6564409. The reversal of 6564401 is 1044656.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3519376 + 3045025 = 1876^2 + 1745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6564401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6564409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282200 + 3282201.

It is an arithmetic number, because the mean of its divisors is an integer number (3282201).

Almost surely, 2^6564401 is an apocalyptic number.

It is an amenable number.

6564401 is a deficient number, since it is larger than the sum of its proper divisors (1).

6564401 is an equidigital number, since it uses as much as digits as its factorization.

6564401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 6564401 is about 2562.1087018314. The cubic root of 6564401 is about 187.2398858354.

The spelling of 6564401 in words is "six million, five hundred sixty-four thousand, four hundred one".