427865 has 8 divisors (see below), whose sum is σ = 520128. Its totient is φ = 337840.

The previous prime is 427859. The next prime is 427877. The reversal of 427865 is 568724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 427865 - 2⁴ = 427849 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101 + ... + 930.

It is an arithmetic number, because the mean of its divisors is an integer number (65016).

2⁴²⁷⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

427865 is a deficient number, since it is larger than the sum of its proper divisors (92263).

427865 is a wasteful number, since it uses less digits than its factorization.

427865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119.

The product of its digits is 13440, while the sum is 32.

The square root of 427865 is about 654.1139044540. The cubic root of 427865 is about 75.3532961079.

The spelling of 427865 in words is "four hundred twenty-seven thousand, eight hundred sixty-five".