478164587 has 8 divisors (see below), whose sum is σ = 484512000. Its totient is φ = 471858984.

The previous prime is 478164581. The next prime is 478164607. The reversal of 478164587 is 785461874.

It is a happy number.

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 478164587 - 2⁶ = 478164523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478164581) 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, 12914 + ... + 33512.

It is an arithmetic number, because the mean of its divisors is an integer number (60564000).

Almost surely, 2^478164587 is an apocalyptic number.

478164587 is a deficient number, since it is larger than the sum of its proper divisors (6347413).

478164587 is a wasteful number, since it uses less digits than its factorization.

478164587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20905.

The product of its digits is 1505280, while the sum is 50.

The square root of 478164587 is about 21866.9748021989. The cubic root of 478164587 is about 781.9742814391.

The spelling of 478164587 in words is "four hundred seventy-eight million, one hundred sixty-four thousand, five hundred eighty-seven".