478563771 has 32 divisors (see below), whose sum is σ = 778752000. Its totient is φ = 255507840.

The previous prime is 478563763. The next prime is 478563791. The reversal of 478563771 is 177365874.

It is not a de Polignac number, because 478563771 - 2³ = 478563763 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 478563771.

It is not an unprimeable number, because it can be changed into a prime (478563721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6205 + ... + 31553.

It is an arithmetic number, because the mean of its divisors is an integer number (24336000).

Almost surely, 2^478563771 is an apocalyptic number.

478563771 is a deficient number, since it is larger than the sum of its proper divisors (300188229).

478563771 is a wasteful number, since it uses less digits than its factorization.

478563771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25419.

The product of its digits is 987840, while the sum is 48.

The square root of 478563771 is about 21876.1004523201. The cubic root of 478563771 is about 782.1918249421.

The spelling of 478563771 in words is "four hundred seventy-eight million, five hundred sixty-three thousand, seven hundred seventy-one".