663224432749 has 2 divisors, whose sum is σ = 663224432750. Its totient is φ = 663224432748.

The previous prime is 663224432747. The next prime is 663224432803. The reversal of 663224432749 is 947234422366.

It is a happy number.

663224432749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339838863849 + 323385568900 = 582957^2 + 568670^2 .

It is a cyclic number.

It is not a de Polignac number, because 663224432749 - 2¹ = 663224432747 is a prime.

Together with 663224432747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 663224432696 and 663224432705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663224432747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331612216374 + 331612216375.

It is an arithmetic number, because the mean of its divisors is an integer number (331612216375).

Almost surely, 2^663224432749 is an apocalyptic number.

It is an amenable number.

663224432749 is a deficient number, since it is larger than the sum of its proper divisors (1).

663224432749 is an equidigital number, since it uses as much as digits as its factorization.

663224432749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 52.

The spelling of 663224432749 in words is "six hundred sixty-three billion, two hundred twenty-four million, four hundred thirty-two thousand, seven hundred forty-nine".