64944001 has 2 divisors, whose sum is σ = 64944002. Its totient is φ = 64944000.

The previous prime is 64943999. The next prime is 64944013. The reversal of 64944001 is 10044946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55115776 + 9828225 = 7424^2 + 3135^2 .

It is a cyclic number.

It is not a de Polignac number, because 64944001 - 2¹ = 64943999 is a prime.

Together with 64943999, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64944031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32472000 + 32472001.

It is an arithmetic number, because the mean of its divisors is an integer number (32472001).

Almost surely, 2^64944001 is an apocalyptic number.

It is an amenable number.

64944001 is a deficient number, since it is larger than the sum of its proper divisors (1).

64944001 is an equidigital number, since it uses as much as digits as its factorization.

64944001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 64944001 is about 8058.7840894269. The cubic root of 64944001 is about 401.9570777502.

Adding to 64944001 its reverse (10044946), we get a palindrome (74988947).

The spelling of 64944001 in words is "sixty-four million, nine hundred forty-four thousand, one".