663533743 has 4 divisors (see below), whose sum is σ = 663724360. Its totient is φ = 663343128.

The previous prime is 663533723. The next prime is 663533771. The reversal of 663533743 is 347335366.

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

It is a cyclic number.

It is not a de Polignac number, because 663533743 - 2⁹ = 663533231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663533696 and 663533705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663533723) 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 3 ways as a sum of consecutive naturals, for example, 89988 + ... + 97081.

It is an arithmetic number, because the mean of its divisors is an integer number (165931090).

Almost surely, 2^663533743 is an apocalyptic number.

663533743 is a deficient number, since it is larger than the sum of its proper divisors (190617).

663533743 is a wasteful number, since it uses less digits than its factorization.

663533743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190616.

The product of its digits is 408240, while the sum is 40.

The square root of 663533743 is about 25759.1487242882. The cubic root of 663533743 is about 872.2098850718.

The spelling of 663533743 in words is "six hundred sixty-three million, five hundred thirty-three thousand, seven hundred forty-three".