475399663 has 4 divisors (see below), whose sum is σ = 490735168. Its totient is φ = 460064160.

The previous prime is 475399621. The next prime is 475399667. The reversal of 475399663 is 366993574.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-475399663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 475399663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475399667) 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, 7667706 + ... + 7667767.

It is an arithmetic number, because the mean of its divisors is an integer number (122683792).

Almost surely, 2^475399663 is an apocalyptic number.

475399663 is a deficient number, since it is larger than the sum of its proper divisors (15335505).

475399663 is a wasteful number, since it uses less digits than its factorization.

475399663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15335504.

The product of its digits is 3674160, while the sum is 52.

The square root of 475399663 is about 21803.6616878909. The cubic root of 475399663 is about 780.4641457324.

The spelling of 475399663 in words is "four hundred seventy-five million, three hundred ninety-nine thousand, six hundred sixty-three".