63642223 has 2 divisors, whose sum is σ = 63642224. Its totient is φ = 63642222.

The previous prime is 63642217. The next prime is 63642233. The reversal of 63642223 is 32224636.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63642223 - 2²⁵ = 30087791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63642191 and 63642200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63642233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31821111 + 31821112.

It is an arithmetic number, because the mean of its divisors is an integer number (31821112).

Almost surely, 2^63642223 is an apocalyptic number.

63642223 is a deficient number, since it is larger than the sum of its proper divisors (1).

63642223 is an equidigital number, since it uses as much as digits as its factorization.

63642223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 28.

The square root of 63642223 is about 7977.6075987730. The cubic root of 63642223 is about 399.2532379838.

Adding to 63642223 its reverse (32224636), we get a palindrome (95866859).

The spelling of 63642223 in words is "sixty-three million, six hundred forty-two thousand, two hundred twenty-three".