505604985 has 8 divisors (see below), whose sum is σ = 808968000. Its totient is φ = 269655984.

The previous prime is 505604959. The next prime is 505604993. The reversal of 505604985 is 589406505.

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

It is not a de Polignac number, because 505604985 - 2¹⁵ = 505572217 is a prime.

It is a Curzon 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, 16853485 + ... + 16853514.

It is an arithmetic number, because the mean of its divisors is an integer number (101121000).

Almost surely, 2^505604985 is an apocalyptic number.

It is an amenable number.

505604985 is a deficient number, since it is larger than the sum of its proper divisors (303363015).

505604985 is a wasteful number, since it uses less digits than its factorization.

505604985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33707007.

The product of its (nonzero) digits is 216000, while the sum is 42.

The square root of 505604985 is about 22485.6617647780. The cubic root of 505604985 is about 796.6552987257.

The spelling of 505604985 in words is "five hundred five million, six hundred four thousand, nine hundred eighty-five".