478320777 has 24 divisors (see below), whose sum is σ = 771252768. Its totient is φ = 283147200.

The previous prime is 478320769. The next prime is 478320779. The reversal of 478320777 is 777023874.

It is not a de Polignac number, because 478320777 - 2³ = 478320769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (478320779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51924 + ... + 60437.

It is an arithmetic number, because the mean of its divisors is an integer number (32135532).

Almost surely, 2^478320777 is an apocalyptic number.

It is an amenable number.

478320777 is a deficient number, since it is larger than the sum of its proper divisors (292931991).

478320777 is a wasteful number, since it uses less digits than its factorization.

478320777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112421 (or 112418 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 45.

The square root of 478320777 is about 21870.5458779611. The cubic root of 478320777 is about 782.0594147944.

The spelling of 478320777 in words is "four hundred seventy-eight million, three hundred twenty thousand, seven hundred seventy-seven".