1106065561 has 4 divisors (see below), whose sum is σ = 1154155392. Its totient is φ = 1057975732.

The previous prime is 1106065511. The next prime is 1106065573. The reversal of 1106065561 is 1655606011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1655606011 = 3079 ⋅537709.

It is a cyclic number.

It is not a de Polignac number, because 1106065561 - 2¹¹ = 1106063513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1106065501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24044881 + ... + 24044926.

It is an arithmetic number, because the mean of its divisors is an integer number (288538848).

Almost surely, 2^1106065561 is an apocalyptic number.

It is an amenable number.

1106065561 is a deficient number, since it is larger than the sum of its proper divisors (48089831).

1106065561 is an equidigital number, since it uses as much as digits as its factorization.

1106065561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48089830.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1106065561 is about 33257.5639667129. The cubic root of 1106065561 is about 1034.1740198366.

The spelling of 1106065561 in words is "one billion, one hundred six million, sixty-five thousand, five hundred sixty-one".