1106605665 has 32 divisors (see below), whose sum is σ = 2146147200. Its totient is φ = 536535360.

The previous prime is 1106605639. The next prime is 1106605681. The reversal of 1106605665 is 5665066011.

It is not a de Polignac number, because 1106605665 - 2¹⁰ = 1106604641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 371110 + ... + 374079.

It is an arithmetic number, because the mean of its divisors is an integer number (67067100).

Almost surely, 2^1106605665 is an apocalyptic number.

1106605665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1106605665 is a deficient number, since it is larger than the sum of its proper divisors (1039541535).

1106605665 is a wasteful number, since it uses less digits than its factorization.

1106605665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745214 (or 745208 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 1106605665 is about 33265.6829931387. The cubic root of 1106605665 is about 1034.3423253005.

The spelling of 1106605665 in words is "one billion, one hundred six million, six hundred five thousand, six hundred sixty-five".