413605 has 4 divisors (see below), whose sum is σ = 496332. Its totient is φ = 330880.

The previous prime is 413597. The next prime is 413629. The reversal of 413605 is 506314.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506314 = 2 ⋅253157.

It can be written as a sum of positive squares in 2 ways, for example, as 101124 + 312481 = 318^2 + 559^2 .

It is not a de Polignac number, because 413605 - 2³ = 413597 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a zygodrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41356 + ... + 41365.

It is an arithmetic number, because the mean of its divisors is an integer number (124083).

2⁴¹³⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

413605 is a deficient number, since it is larger than the sum of its proper divisors (82727).

413605 is an equidigital number, since it uses as much as digits as its factorization.

413605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82726.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 413605 is about 643.1212949359. The cubic root of 413605 is about 74.5066882874.

Adding to 413605 its reverse (506314), we get a palindrome (919919).

The spelling of 413605 in words is "four hundred thirteen thousand, six hundred five".