478864673 has 4 divisors (see below), whose sum is σ = 547273920. Its totient is φ = 410455428.

The previous prime is 478864663. The next prime is 478864679. The reversal of 478864673 is 376468874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 478864673 - 2¹⁶ = 478799137 is a prime.

It is a super-2 number, since 2×478864673² = 458622750094793858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478864679) 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 3 ways as a sum of consecutive naturals, for example, 34204613 + ... + 34204626.

It is an arithmetic number, because the mean of its divisors is an integer number (136818480).

Almost surely, 2^478864673 is an apocalyptic number.

It is an amenable number.

478864673 is a deficient number, since it is larger than the sum of its proper divisors (68409247).

478864673 is an equidigital number, since it uses as much as digits as its factorization.

478864673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68409246.

The product of its digits is 5419008, while the sum is 53.

The square root of 478864673 is about 21882.9767856204. The cubic root of 478864673 is about 782.3557277049.

The spelling of 478864673 in words is "four hundred seventy-eight million, eight hundred sixty-four thousand, six hundred seventy-three".