478320787 has 8 divisors (see below), whose sum is σ = 547100000. Its totient is φ = 409653504.

The previous prime is 478320779. The next prime is 478320803. The reversal of 478320787 is 787023874.

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 478320787 - 2³ = 478320779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478320767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18612 + ... + 36097.

It is an arithmetic number, because the mean of its divisors is an integer number (68387500).

Almost surely, 2^478320787 is an apocalyptic number.

478320787 is a deficient number, since it is larger than the sum of its proper divisors (68779213).

478320787 is a wasteful number, since it uses less digits than its factorization.

478320787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55965.

The product of its (nonzero) digits is 526848, while the sum is 46.

The square root of 478320787 is about 21870.5461065790. The cubic root of 478320787 is about 782.0594202444.

The spelling of 478320787 in words is "four hundred seventy-eight million, three hundred twenty thousand, seven hundred eighty-seven".