63320161 has 4 divisors (see below), whose sum is σ = 63359172. Its totient is φ = 63281152.

The previous prime is 63320149. The next prime is 63320183. The reversal of 63320161 is 16102336.

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 62110161 + 1210000 = 7881^2 + 1100^2 .

It is a cyclic number.

It is not a de Polignac number, because 63320161 - 2¹¹ = 63318113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63320111) 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 in 3 ways as a sum of consecutive naturals, for example, 16960 + ... + 20353.

It is an arithmetic number, because the mean of its divisors is an integer number (15839793).

Almost surely, 2^63320161 is an apocalyptic number.

It is an amenable number.

63320161 is a deficient number, since it is larger than the sum of its proper divisors (39011).

63320161 is a wasteful number, since it uses less digits than its factorization.

63320161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39010.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 63320161 is about 7957.3966220115. The cubic root of 63320161 is about 398.5786239579.

Adding to 63320161 its reverse (16102336), we get a palindrome (79422497).

The spelling of 63320161 in words is "sixty-three million, three hundred twenty thousand, one hundred sixty-one".