478646027 has 4 divisors (see below), whose sum is σ = 478825296. Its totient is φ = 478466760.

The previous prime is 478646009. The next prime is 478646039. The reversal of 478646027 is 720646874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720646874 = 2 ⋅360323437.

It is a cyclic number.

It is not a de Polignac number, because 478646027 - 2²⁰ = 477597451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478646087) 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, 85568 + ... + 90989.

It is an arithmetic number, because the mean of its divisors is an integer number (119706324).

Almost surely, 2^478646027 is an apocalyptic number.

478646027 is a deficient number, since it is larger than the sum of its proper divisors (179269).

478646027 is a wasteful number, since it uses less digits than its factorization.

478646027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179268.

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 478646027 is about 21877.9804141059. The cubic root of 478646027 is about 782.2366370018.

The spelling of 478646027 in words is "four hundred seventy-eight million, six hundred forty-six thousand, twenty-seven".