64730563 has 2 divisors, whose sum is σ = 64730564. Its totient is φ = 64730562.

The previous prime is 64730551. The next prime is 64730657. The reversal of 64730563 is 36503746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64730563 - 2⁵ = 64730531 is a prime.

It is equal to p_3825646 and since 64730563 and 3825646 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (64733563) 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, 32365281 + 32365282.

It is an arithmetic number, because the mean of its divisors is an integer number (32365282).

Almost surely, 2^64730563 is an apocalyptic number.

64730563 is a deficient number, since it is larger than the sum of its proper divisors (1).

64730563 is an equidigital number, since it uses as much as digits as its factorization.

64730563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 64730563 is about 8045.5306226501. The cubic root of 64730563 is about 401.5162514416.

The spelling of 64730563 in words is "sixty-four million, seven hundred thirty thousand, five hundred sixty-three".