478663503 has 4 divisors (see below), whose sum is σ = 638218008. Its totient is φ = 319109000.

The previous prime is 478663501. The next prime is 478663513. The reversal of 478663503 is 305366874.

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 478663503 - 2¹ = 478663501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478663501) 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, 79777248 + ... + 79777253.

It is an arithmetic number, because the mean of its divisors is an integer number (159554502).

Almost surely, 2^478663503 is an apocalyptic number.

478663503 is a deficient number, since it is larger than the sum of its proper divisors (159554505).

478663503 is a wasteful number, since it uses less digits than its factorization.

478663503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159554504.

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 478663503 is about 21878.3798074720. The cubic root of 478663503 is about 782.2461570509.

The spelling of 478663503 in words is "four hundred seventy-eight million, six hundred sixty-three thousand, five hundred three".