66463361 has 4 divisors (see below), whose sum is σ = 67373892. Its totient is φ = 65552832.

The previous prime is 66463289. The next prime is 66463379. The reversal of 66463361 is 16336466.

66463361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50908225 + 15555136 = 7135^2 + 3944^2 .

It is not a de Polignac number, because 66463361 - 2¹⁰ = 66462337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66463391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455156 + ... + 455301.

It is an arithmetic number, because the mean of its divisors is an integer number (16843473).

Almost surely, 2^66463361 is an apocalyptic number.

It is an amenable number.

66463361 is a deficient number, since it is larger than the sum of its proper divisors (910531).

66463361 is an equidigital number, since it uses as much as digits as its factorization.

66463361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910530.

The product of its digits is 46656, while the sum is 35.

The square root of 66463361 is about 8152.5064244072. The cubic root of 66463361 is about 405.0675312884.

The spelling of 66463361 in words is "sixty-six million, four hundred sixty-three thousand, three hundred sixty-one".