663344105 has 8 divisors (see below), whose sum is σ = 796674312. Its totient is φ = 530234368.

The previous prime is 663344027. The next prime is 663344137. The reversal of 663344105 is 501443366.

It can be written as a sum of positive squares in 4 ways, for example, as 104305369 + 559038736 = 10213^2 + 23644^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 663344105 - 2²⁸ = 394908649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48422 + ... + 60591.

It is an arithmetic number, because the mean of its divisors is an integer number (99584289).

Almost surely, 2^663344105 is an apocalyptic number.

It is an amenable number.

663344105 is a deficient number, since it is larger than the sum of its proper divisors (133330207).

663344105 is a wasteful number, since it uses less digits than its factorization.

663344105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110235.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 663344105 is about 25755.4674777997. The cubic root of 663344105 is about 872.1267846016.

The spelling of 663344105 in words is "six hundred sixty-three million, three hundred forty-four thousand, one hundred five".