1106616561 has 4 divisors (see below), whose sum is σ = 1475488752. Its totient is φ = 737744372.

The previous prime is 1106616559. The next prime is 1106616611. The reversal of 1106616561 is 1656166011.

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.

It is a cyclic number.

It is not a de Polignac number, because 1106616561 - 2¹ = 1106616559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1106616661) 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, 184436091 + ... + 184436096.

It is an arithmetic number, because the mean of its divisors is an integer number (368872188).

Almost surely, 2^1106616561 is an apocalyptic number.

It is an amenable number.

1106616561 is a deficient number, since it is larger than the sum of its proper divisors (368872191).

1106616561 is an equidigital number, since it uses as much as digits as its factorization.

1106616561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368872190.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1106616561 is about 33265.8467651133. The cubic root of 1106616561 is about 1034.3457201132.

The spelling of 1106616561 in words is "one billion, one hundred six million, six hundred sixteen thousand, five hundred sixty-one".