755645663 has 8 divisors (see below), whose sum is σ = 789011280. Its totient is φ = 722767360.

The previous prime is 755645659. The next prime is 755645701. The reversal of 755645663 is 366546557.

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 755645663 - 2² = 755645659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (755645623) by changing a digit.

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, 118658 + ... + 124863.

It is an arithmetic number, because the mean of its divisors is an integer number (98626410).

Almost surely, 2^755645663 is an apocalyptic number.

755645663 is a deficient number, since it is larger than the sum of its proper divisors (33365617).

755645663 is a wasteful number, since it uses less digits than its factorization.

755645663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243657.

The product of its digits is 2268000, while the sum is 47.

The square root of 755645663 is about 27489.0098584871. The cubic root of 755645663 is about 910.8343444763.

The spelling of 755645663 in words is "seven hundred fifty-five million, six hundred forty-five thousand, six hundred sixty-three".