63442217 has 2 divisors, whose sum is σ = 63442218. Its totient is φ = 63442216.

The previous prime is 63442207. The next prime is 63442231. The reversal of 63442217 is 71224436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44943616 + 18498601 = 6704^2 + 4301^2 .

It is a cyclic number.

It is not a de Polignac number, because 63442217 - 2⁴ = 63442201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63442217.

It is not a weakly prime, because it can be changed into another prime (63442207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31721108 + 31721109.

It is an arithmetic number, because the mean of its divisors is an integer number (31721109).

Almost surely, 2^63442217 is an apocalyptic number.

It is an amenable number.

63442217 is a deficient number, since it is larger than the sum of its proper divisors (1).

63442217 is an equidigital number, since it uses as much as digits as its factorization.

63442217 is an odious number, because the sum of its binary digits is odd.

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

The square root of 63442217 is about 7965.0622721985. The cubic root of 63442217 is about 398.8345597537.

The spelling of 63442217 in words is "sixty-three million, four hundred forty-two thousand, two hundred seventeen".