63405223 has 32 divisors (see below), whose sum is σ = 83635200. Its totient is φ = 46738944.

The previous prime is 63405211. The next prime is 63405239. The reversal of 63405223 is 32250436.

It is a happy number.

It is not a de Polignac number, because 63405223 - 2²⁵ = 29850791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63405253) 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 in 31 ways as a sum of consecutive naturals, for example, 65086 + ... + 66052.

It is an arithmetic number, because the mean of its divisors is an integer number (2613600).

Almost surely, 2^63405223 is an apocalyptic number.

63405223 is a deficient number, since it is larger than the sum of its proper divisors (20229977).

63405223 is a wasteful number, since it uses less digits than its factorization.

63405223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 63405223 is about 7962.7396667228. The cubic root of 63405223 is about 398.7570227698.

Adding to 63405223 its reverse (32250436), we get a palindrome (95655659).

The spelling of 63405223 in words is "sixty-three million, four hundred five thousand, two hundred twenty-three".