505605605 has 8 divisors (see below), whose sum is σ = 607111200. Its totient is φ = 404228176.

The previous prime is 505605593. The next prime is 505605631. The reversal of 505605605 is 506506505.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505605605 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23135 + ... + 39324.

It is an arithmetic number, because the mean of its divisors is an integer number (75888900).

Almost surely, 2^505605605 is an apocalyptic number.

It is an amenable number.

505605605 is a deficient number, since it is larger than the sum of its proper divisors (101505595).

505605605 is a wasteful number, since it uses less digits than its factorization.

505605605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64083.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 505605605 is about 22485.6755513371. The cubic root of 505605605 is about 796.6556243594.

It can be divided in two parts, 50560 and 5605, that added together give a palindrome (56165).

The spelling of 505605605 in words is "five hundred five million, six hundred five thousand, six hundred five".