478578687 has 16 divisors (see below), whose sum is σ = 668245248. Its totient is φ = 304082240.

The previous prime is 478578673. The next prime is 478578689. The reversal of 478578687 is 786875874.

It is a cyclic number.

It is not a de Polignac number, because 478578687 - 2⁸ = 478578431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478578687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478578689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7048 + ... + 31730.

It is an arithmetic number, because the mean of its divisors is an integer number (41765328).

Almost surely, 2^478578687 is an apocalyptic number.

478578687 is a deficient number, since it is larger than the sum of its proper divisors (189666561).

478578687 is a wasteful number, since it uses less digits than its factorization.

478578687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24990.

The product of its digits is 21073920, while the sum is 60.

The square root of 478578687 is about 21876.4413696561. The cubic root of 478578687 is about 782.1999513770.

The spelling of 478578687 in words is "four hundred seventy-eight million, five hundred seventy-eight thousand, six hundred eighty-seven".