478787 has 2 divisors, whose sum is σ = 478788. Its totient is φ = 478786.

The previous prime is 478769. The next prime is 478801. The reversal of 478787 is 787874.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478787 - 2⁸ = 478531 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 478787.

It is not a weakly prime, because it can be changed into another prime (478727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239393 + 239394.

It is an arithmetic number, because the mean of its divisors is an integer number (239394).

2⁴⁷⁸⁷⁸⁷ is an apocalyptic number.

478787 is a deficient number, since it is larger than the sum of its proper divisors (1).

478787 is an equidigital number, since it uses as much as digits as its factorization.

478787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87808, while the sum is 41.

The square root of 478787 is about 691.9443619251. The cubic root of 478787 is about 78.2313425425.

The spelling of 478787 in words is "four hundred seventy-eight thousand, seven hundred eighty-seven".