63417321 has 12 divisors (see below), whose sum is σ = 99930480. Its totient is φ = 38434680.

The previous prime is 63417317. The next prime is 63417331. The reversal of 63417321 is 12371436.

63417321 is a `hidden beast` number, since 634 + 1 + 7 + 3 + 21 = 666.

It is not a de Polignac number, because 63417321 - 2² = 63417317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63417301) 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 11 ways as a sum of consecutive naturals, for example, 320191 + ... + 320388.

It is an arithmetic number, because the mean of its divisors is an integer number (8327540).

Almost surely, 2^63417321 is an apocalyptic number.

It is an amenable number.

63417321 is a deficient number, since it is larger than the sum of its proper divisors (36513159).

63417321 is a wasteful number, since it uses less digits than its factorization.

63417321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640596 (or 640593 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 63417321 is about 7963.4992936523. The cubic root of 63417321 is about 398.7823826978.

Adding to 63417321 its reverse (12371436), we get a palindrome (75788757).

It can be divided in two parts, 634 and 17321, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 63417321 in words is "sixty-three million, four hundred seventeen thousand, three hundred twenty-one".