6223666663217 has 2 divisors, whose sum is σ = 6223666663218. Its totient is φ = 6223666663216.

The previous prime is 6223666663171. The next prime is 6223666663301. The reversal of 6223666663217 is 7123666663226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4500745278016 + 1722921385201 = 2121496^2 + 1312601^2 .

It is a cyclic number.

It is not a de Polignac number, because 6223666663217 - 2³⁴ = 6206486794033 is a prime.

It is not a weakly prime, because it can be changed into another prime (6223666662217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3111833331608 + 3111833331609.

It is an arithmetic number, because the mean of its divisors is an integer number (3111833331609).

Almost surely, 2^{6223666663217} is an apocalyptic number.

It is an amenable number.

6223666663217 is a deficient number, since it is larger than the sum of its proper divisors (1).

6223666663217 is an equidigital number, since it uses as much as digits as its factorization.

6223666663217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23514624, while the sum is 56.

Subtracting 6223666663217 from its reverse (7123666663226), we obtain a palindrome (900000000009).

The spelling of 6223666663217 in words is "six trillion, two hundred twenty-three billion, six hundred sixty-six million, six hundred sixty-three thousand, two hundred seventeen".