64244233 has 2 divisors, whose sum is σ = 64244234. Its totient is φ = 64244232.

The previous prime is 64244197. The next prime is 64244237. The reversal of 64244233 is 33244246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32569849 + 31674384 = 5707^2 + 5628^2 .

It is a cyclic number.

It is not a de Polignac number, because 64244233 - 2⁹ = 64243721 is a prime.

It is not a weakly prime, because it can be changed into another prime (64244237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32122116 + 32122117.

It is an arithmetic number, because the mean of its divisors is an integer number (32122117).

Almost surely, 2^64244233 is an apocalyptic number.

It is an amenable number.

64244233 is a deficient number, since it is larger than the sum of its proper divisors (1).

64244233 is an equidigital number, since it uses as much as digits as its factorization.

64244233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 28.

The square root of 64244233 is about 8015.2500272917. The cubic root of 64244233 is about 400.5081728774.

Adding to 64244233 its reverse (33244246), we get a palindrome (97488479).

The spelling of 64244233 in words is "sixty-four million, two hundred forty-four thousand, two hundred thirty-three".