478864567 has 4 divisors (see below), whose sum is σ = 479108520. Its totient is φ = 478620616.

The previous prime is 478864513. The next prime is 478864571. The reversal of 478864567 is 765468874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 765468874 = 2 ⋅382734437.

It is a cyclic number.

It is not a de Polignac number, because 478864567 - 2¹⁵ = 478831799 is a prime.

It is a super-2 number, since 2×478864567² = 458622547056194978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478861567) 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, 119008 + ... + 122965.

It is an arithmetic number, because the mean of its divisors is an integer number (119777130).

Almost surely, 2^478864567 is an apocalyptic number.

478864567 is a deficient number, since it is larger than the sum of its proper divisors (243953).

478864567 is a wasteful number, since it uses less digits than its factorization.

478864567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243952.

The product of its digits is 9031680, while the sum is 55.

The square root of 478864567 is about 21882.9743636463. The cubic root of 478864567 is about 782.3556699783.

The spelling of 478864567 in words is "four hundred seventy-eight million, eight hundred sixty-four thousand, five hundred sixty-seven".