478643617 has 8 divisors (see below), whose sum is σ = 481021632. Its totient is φ = 476271600.

The previous prime is 478643609. The next prime is 478643623. The reversal of 478643617 is 716346874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 478643617 - 2³ = 478643609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478643677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256267 + ... + 258127.

It is an arithmetic number, because the mean of its divisors is an integer number (60127704).

Almost surely, 2^478643617 is an apocalyptic number.

It is an amenable number.

478643617 is a deficient number, since it is larger than the sum of its proper divisors (2378015).

478643617 is a wasteful number, since it uses less digits than its factorization.

478643617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999.

The product of its digits is 677376, while the sum is 46.

The square root of 478643617 is about 21877.9253358265. The cubic root of 478643617 is about 782.2353241364.

The spelling of 478643617 in words is "four hundred seventy-eight million, six hundred forty-three thousand, six hundred seventeen".