7105660561 has 8 divisors (see below), whose sum is σ = 7547380200. Its totient is φ = 6666578688.

The previous prime is 7105660559. The next prime is 7105660577. The reversal of 7105660561 is 1650665017.

It can be written as a sum of positive squares in 4 ways, for example, as 2029953025 + 5075707536 = 45055^2 + 71244^2 .

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 7105660561 - 2¹ = 7105660559 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 7105660561.

It is not an unprimeable number, because it can be changed into a prime (7105660531) by changing a digit.

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, 653886 + ... + 664663.

It is an arithmetic number, because the mean of its divisors is an integer number (943422525).

Almost surely, 2^7105660561 is an apocalyptic number.

It is an amenable number.

7105660561 is a deficient number, since it is larger than the sum of its proper divisors (441719639).

7105660561 is a wasteful number, since it uses less digits than its factorization.

7105660561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318883.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 7105660561 is about 84295.0802894214. The cubic root of 7105660561 is about 1922.5079856473.

The spelling of 7105660561 in words is "seven billion, one hundred five million, six hundred sixty thousand, five hundred sixty-one".