11665145 has 32 divisors (see below), whose sum is σ = 16174080. Its totient is φ = 8017920.

The previous prime is 11665133. The next prime is 11665151. The reversal of 11665145 is 54156611.

It is not a de Polignac number, because 11665145 - 2⁶ = 11665081 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 49949 + ... + 50181.

It is an arithmetic number, because the mean of its divisors is an integer number (505440).

Almost surely, 2^11665145 is an apocalyptic number.

It is an amenable number.

11665145 is a deficient number, since it is larger than the sum of its proper divisors (4508935).

11665145 is a wasteful number, since it uses less digits than its factorization.

11665145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305.

The product of its digits is 3600, while the sum is 29.

The square root of 11665145 is about 3415.4274988645. The cubic root of 11665145 is about 226.7932095696.

The spelling of 11665145 in words is "eleven million, six hundred sixty-five thousand, one hundred forty-five".