663343441 has 2 divisors, whose sum is σ = 663343442. Its totient is φ = 663343440.

The previous prime is 663343411. The next prime is 663343507. The reversal of 663343441 is 144343366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 512569600 + 150773841 = 22640^2 + 12279^2 .

It is a cyclic number.

It is not a de Polignac number, because 663343441 - 2¹⁵ = 663310673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663343397 and 663343406.

It is not a weakly prime, because it can be changed into another prime (663343411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331671720 + 331671721.

It is an arithmetic number, because the mean of its divisors is an integer number (331671721).

Almost surely, 2^663343441 is an apocalyptic number.

It is an amenable number.

663343441 is a deficient number, since it is larger than the sum of its proper divisors (1).

663343441 is an equidigital number, since it uses as much as digits as its factorization.

663343441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 34.

The square root of 663343441 is about 25755.4545873297. The cubic root of 663343441 is about 872.1264936051.

The spelling of 663343441 in words is "six hundred sixty-three million, three hundred forty-three thousand, four hundred forty-one".