408165 has 8 divisors (see below), whose sum is σ = 653088. Its totient is φ = 217680.

The previous prime is 408137. The next prime is 408169. The reversal of 408165 is 561804.

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

It is not a de Polignac number, because 408165 - 2¹¹ = 406117 is a prime.

408165 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13591 + ... + 13620.

It is an arithmetic number, because the mean of its divisors is an integer number (81636).

2⁴⁰⁸¹⁶⁵ is an apocalyptic number.

It is an amenable number.

408165 is a deficient number, since it is larger than the sum of its proper divisors (244923).

408165 is a wasteful number, since it uses less digits than its factorization.

408165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27219.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 408165 is about 638.8779226112. The cubic root of 408165 is about 74.1785922553.

Adding to 408165 its reverse (561804), we get a palindrome (969969).

The spelling of 408165 in words is "four hundred eight thousand, one hundred sixty-five".