7856560505 has 8 divisors (see below), whose sum is σ = 9433641672. Its totient is φ = 6281402368.

The previous prime is 7856560463. The next prime is 7856560511. The reversal of 7856560505 is 5050656587.

It can be written as a sum of positive squares in 4 ways, for example, as 913671529 + 6942888976 = 30227^2 + 83324^2 .

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 7856560505 - 2¹⁰ = 7856559481 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 7856560505.

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, 471752 + ... + 488121.

It is an arithmetic number, because the mean of its divisors is an integer number (1179205209).

Almost surely, 2^7856560505 is an apocalyptic number.

It is an amenable number.

7856560505 is a deficient number, since it is larger than the sum of its proper divisors (1577081167).

7856560505 is a wasteful number, since it uses less digits than its factorization.

7856560505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961515.

The product of its (nonzero) digits is 1260000, while the sum is 47.

The square root of 7856560505 is about 88637.2410728132. The cubic root of 7856560505 is about 1987.9745479193.

The spelling of 7856560505 in words is "seven billion, eight hundred fifty-six million, five hundred sixty thousand, five hundred five".