5605605 has 20 divisors (see below), whose sum is σ = 10049292. Its totient is φ = 2989440.

The previous prime is 5605559. The next prime is 5605619. The reversal of 5605605 is 5065065.

5605605 is a `hidden beast` number, since 56 + 0 + 5 + 605 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1896129 + 3709476 = 1377^2 + 1926^2 .

It is not a de Polignac number, because 5605605 - 2⁷ = 5605477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

5605605 is a lucky number.

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 19 ways as a sum of consecutive naturals, for example, 6516 + ... + 7325.

Almost surely, 2^5605605 is an apocalyptic number.

It is an amenable number.

5605605 is a deficient number, since it is larger than the sum of its proper divisors (4443687).

5605605 is a wasteful number, since it uses less digits than its factorization.

5605605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13858 (or 13849 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 5605605 is about 2367.6158894550. The cubic root of 5605605 is about 177.6400270446.

The spelling of 5605605 in words is "five million, six hundred five thousand, six hundred five".