648475504805 has 8 divisors (see below), whose sum is σ = 778636865400. Its totient is φ = 518469564096.

The previous prime is 648475504769. The next prime is 648475504823. The reversal of 648475504805 is 508405574846.

It can be written as a sum of positive squares in 4 ways, for example, as 35058241 + 648440446564 = 5921^2 + 805258^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 648475504805 - 2¹⁴ = 648475488421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38845790 + ... + 38862479.

It is an arithmetic number, because the mean of its divisors is an integer number (97329608175).

Almost surely, 2^648475504805 is an apocalyptic number.

It is an amenable number.

648475504805 is a deficient number, since it is larger than the sum of its proper divisors (130161360595).

648475504805 is a wasteful number, since it uses less digits than its factorization.

648475504805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77709943.

The product of its (nonzero) digits is 21504000, while the sum is 56.

The spelling of 648475504805 in words is "six hundred forty-eight billion, four hundred seventy-five million, five hundred four thousand, eight hundred five".