663755434 has 4 divisors (see below), whose sum is σ = 995633154. Its totient is φ = 331877716.

The previous prime is 663755423. The next prime is 663755447. The reversal of 663755434 is 434557366.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 381616225 + 282139209 = 19535^2 + 16797^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165938857 + ... + 165938860.

Almost surely, 2^663755434 is an apocalyptic number.

663755434 is a deficient number, since it is larger than the sum of its proper divisors (331877720).

663755434 is a wasteful number, since it uses less digits than its factorization.

663755434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331877719.

The product of its digits is 907200, while the sum is 43.

The square root of 663755434 is about 25763.4515156646. The cubic root of 663755434 is about 872.3070112809.

The spelling of 663755434 in words is "six hundred sixty-three million, seven hundred fifty-five thousand, four hundred thirty-four".