427585 has 4 divisors (see below), whose sum is σ = 513108. Its totient is φ = 342064.

The previous prime is 427579. The next prime is 427591. The reversal of 427585 is 585724.

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

It is an interprime number because it is at equal distance from previous prime (427579) and next prime (427591).

It can be written as a sum of positive squares in 2 ways, for example, as 261121 + 166464 = 511^2 + 408^2 .

It is a cyclic number.

It is not a de Polignac number, because 427585 - 2⁷ = 427457 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 4⁶ + 2¹⁵ + 5² + 7 + 8² + 5⁸ .

It is a Duffinian number.

427585 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42754 + ... + 42763.

It is an arithmetic number, because the mean of its divisors is an integer number (128277).

2⁴²⁷⁵⁸⁵ is an apocalyptic number.

It is an amenable number.

427585 is a deficient number, since it is larger than the sum of its proper divisors (85523).

427585 is an equidigital number, since it uses as much as digits as its factorization.

427585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85522.

The product of its digits is 11200, while the sum is 31.

The square root of 427585 is about 653.8998394250. The cubic root of 427585 is about 75.3368551534.

The spelling of 427585 in words is "four hundred twenty-seven thousand, five hundred eighty-five".