478657865 has 32 divisors (see below), whose sum is σ = 696812544. Its totient is φ = 308136960.

The previous prime is 478657859. The next prime is 478657867. The reversal of 478657865 is 568756874.

It is not a de Polignac number, because 478657865 - 2⁶ = 478657801 is a prime.

It is a super-2 number, since 2×478657865² = 458226703452716450, which contains 22 as substring.

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 478657865.

It is not an unprimeable number, because it can be changed into a prime (478657867) 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, 321152 + ... + 322638.

It is an arithmetic number, because the mean of its divisors is an integer number (21775392).

Almost surely, 2^478657865 is an apocalyptic number.

It is an amenable number.

478657865 is a deficient number, since it is larger than the sum of its proper divisors (218154679).

478657865 is a wasteful number, since it uses less digits than its factorization.

478657865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057.

The product of its digits is 11289600, while the sum is 56.

The square root of 478657865 is about 21878.2509584290. The cubic root of 478657865 is about 782.2430857763.

Subtracting 478657865 from its reverse (568756874), we obtain a palindrome (90099009).

The spelling of 478657865 in words is "four hundred seventy-eight million, six hundred fifty-seven thousand, eight hundred sixty-five".