427785 has 24 divisors (see below), whose sum is σ = 731520. Its totient is φ = 213408.

The previous prime is 427781. The next prime is 427787. The reversal of 427785 is 587724.

It is not a de Polignac number, because 427785 - 2² = 427781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5376 + ... + 5454.

It is an arithmetic number, because the mean of its divisors is an integer number (30480).

2⁴²⁷⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

427785 is a deficient number, since it is larger than the sum of its proper divisors (303735).

427785 is a wasteful number, since it uses less digits than its factorization.

427785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 106 counting only the distinct ones).

The product of its digits is 15680, while the sum is 33.

The square root of 427785 is about 654.0527501662. The cubic root of 427785 is about 75.3485994244.

The spelling of 427785 in words is "four hundred twenty-seven thousand, seven hundred eighty-five".