64563241 has 2 divisors, whose sum is σ = 64563242. Its totient is φ = 64563240.

The previous prime is 64563227. The next prime is 64563269. The reversal of 64563241 is 14236546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58293225 + 6270016 = 7635^2 + 2504^2 .

It is a cyclic number.

It is not a de Polignac number, because 64563241 - 2⁵ = 64563209 is a prime.

It is not a weakly prime, because it can be changed into another prime (64563281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32281620 + 32281621.

It is an arithmetic number, because the mean of its divisors is an integer number (32281621).

Almost surely, 2^64563241 is an apocalyptic number.

It is an amenable number.

64563241 is a deficient number, since it is larger than the sum of its proper divisors (1).

64563241 is an equidigital number, since it uses as much as digits as its factorization.

64563241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 64563241 is about 8035.1254501719. The cubic root of 64563241 is about 401.1699932031.

Adding to 64563241 its reverse (14236546), we get a palindrome (78799787).

The spelling of 64563241 in words is "sixty-four million, five hundred sixty-three thousand, two hundred forty-one".