404065 has 8 divisors (see below), whose sum is σ = 488448. Its totient is φ = 320880.

The previous prime is 404051. The next prime is 404081. The reversal of 404065 is 560404.

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

It is not a de Polignac number, because 404065 - 2⁹ = 403553 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

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, 864 + ... + 1246.

It is an arithmetic number, because the mean of its divisors is an integer number (61056).

2⁴⁰⁴⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

404065 is a deficient number, since it is larger than the sum of its proper divisors (84383).

404065 is a wasteful number, since it uses less digits than its factorization.

404065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 404065 is about 635.6610732143. The cubic root of 404065 is about 73.9293823515.

Adding to 404065 its reverse (560404), we get a palindrome (964469).

The spelling of 404065 in words is "four hundred four thousand, sixty-five".