478591663 has 16 divisors (see below), whose sum is σ = 531677952. Its totient is φ = 430735800.

The previous prime is 478591661. The next prime is 478591679. The reversal of 478591663 is 366195874.

It is not a de Polignac number, because 478591663 - 2¹ = 478591661 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 (478591661) 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 15 ways as a sum of consecutive naturals, for example, 135348 + ... + 138838.

It is an arithmetic number, because the mean of its divisors is an integer number (33229872).

Almost surely, 2^478591663 is an apocalyptic number.

478591663 is a deficient number, since it is larger than the sum of its proper divisors (53086289).

478591663 is a wasteful number, since it uses less digits than its factorization.

478591663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627 (or 3605 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 478591663 is about 21876.7379423899. The cubic root of 478591663 is about 782.2070207368.

The spelling of 478591663 in words is "four hundred seventy-eight million, five hundred ninety-one thousand, six hundred sixty-three".