663296873 has 4 divisors (see below), whose sum is σ = 663669840. Its totient is φ = 662923908.

The previous prime is 663296869. The next prime is 663296899. The reversal of 663296873 is 378692366.

663296873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 663296873 - 2² = 663296869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663292873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183803 + ... + 187376.

It is an arithmetic number, because the mean of its divisors is an integer number (165917460).

Almost surely, 2^663296873 is an apocalyptic number.

It is an amenable number.

663296873 is a deficient number, since it is larger than the sum of its proper divisors (372967).

663296873 is a wasteful number, since it uses less digits than its factorization.

663296873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372966.

The product of its digits is 1959552, while the sum is 50.

The square root of 663296873 is about 25754.5505299549. The cubic root of 663296873 is about 872.1060848021.

The spelling of 663296873 in words is "six hundred sixty-three million, two hundred ninety-six thousand, eight hundred seventy-three".