63422213 has 2 divisors, whose sum is σ = 63422214. Its totient is φ = 63422212.

The previous prime is 63422173. The next prime is 63422221. The reversal of 63422213 is 31222436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52519009 + 10903204 = 7247^2 + 3302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63422213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63422263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31711106 + 31711107.

It is an arithmetic number, because the mean of its divisors is an integer number (31711107).

Almost surely, 2^63422213 is an apocalyptic number.

It is an amenable number.

63422213 is a deficient number, since it is larger than the sum of its proper divisors (1).

63422213 is an equidigital number, since it uses as much as digits as its factorization.

63422213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 23.

The square root of 63422213 is about 7963.8064391345. The cubic root of 63422213 is about 398.7926364331.

Adding to 63422213 its reverse (31222436), we get a palindrome (94644649).

The spelling of 63422213 in words is "sixty-three million, four hundred twenty-two thousand, two hundred thirteen".