487805 has 4 divisors (see below), whose sum is σ = 585372. Its totient is φ = 390240.

The previous prime is 487793. The next prime is 487811. The reversal of 487805 is 508784.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85849 + 401956 = 293^2 + 634^2 .

It is not a de Polignac number, because 487805 - 2⁴ = 487789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 48776 + ... + 48785.

It is an arithmetic number, because the mean of its divisors is an integer number (146343).

2⁴⁸⁷⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

487805 is a deficient number, since it is larger than the sum of its proper divisors (97567).

487805 is an equidigital number, since it uses as much as digits as its factorization.

487805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97566.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 487805 is about 698.4303830734. The cubic root of 487805 is about 78.7194556946.

The spelling of 487805 in words is "four hundred eighty-seven thousand, eight hundred five".