504620665 has 4 divisors (see below), whose sum is σ = 605544804. Its totient is φ = 403696528.

The previous prime is 504620653. The next prime is 504620681. The reversal of 504620665 is 566026405.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 391921209 + 112699456 = 19797^2 + 10616^2 .

It is a cyclic number.

It is not a de Polignac number, because 504620665 - 2¹⁹ = 504096377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 504620665.

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 3 ways as a sum of consecutive naturals, for example, 50462062 + ... + 50462071.

It is an arithmetic number, because the mean of its divisors is an integer number (151386201).

Almost surely, 2^504620665 is an apocalyptic number.

It is an amenable number.

504620665 is a deficient number, since it is larger than the sum of its proper divisors (100924139).

504620665 is a wasteful number, since it uses less digits than its factorization.

504620665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100924138.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 504620665 is about 22463.7633757124. The cubic root of 504620665 is about 796.1379823804.

The spelling of 504620665 in words is "five hundred four million, six hundred twenty thousand, six hundred sixty-five".