63424217 has 2 divisors, whose sum is σ = 63424218. Its totient is φ = 63424216.

The previous prime is 63424213. The next prime is 63424219. The reversal of 63424217 is 71242436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43612816 + 19811401 = 6604^2 + 4451^2 .

It is a cyclic number.

It is not a de Polignac number, because 63424217 - 2² = 63424213 is a prime.

Together with 63424219, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63424217.

It is not a weakly prime, because it can be changed into another prime (63424213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31712108 + 31712109.

It is an arithmetic number, because the mean of its divisors is an integer number (31712109).

Almost surely, 2^63424217 is an apocalyptic number.

It is an amenable number.

63424217 is a deficient number, since it is larger than the sum of its proper divisors (1).

63424217 is an equidigital number, since it uses as much as digits as its factorization.

63424217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 29.

The square root of 63424217 is about 7963.9322573714. The cubic root of 63424217 is about 398.7968367071.

The spelling of 63424217 in words is "sixty-three million, four hundred twenty-four thousand, two hundred seventeen".