1165011066 has 32 divisors (see below), whose sum is σ = 2590363200. Its totient is φ = 388119600.

The previous prime is 1165011059. The next prime is 1165011077. The reversal of 1165011066 is 6601105611.

1165011066 is a `hidden beast` number, since 1 + 1 + 650 + 1 + 1 + 0 + 6 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112716 + ... + 122616.

It is an arithmetic number, because the mean of its divisors is an integer number (80948850).

Almost surely, 2^1165011066 is an apocalyptic number.

1165011066 is an abundant number, since it is smaller than the sum of its proper divisors (1425352134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165011066 is a wasteful number, since it uses less digits than its factorization.

1165011066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12091 (or 12085 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1165011066 is about 34132.2584368512. The cubic root of 1165011066 is about 1052.2283939094.

Adding to 1165011066 its reverse (6601105611), we get a palindrome (7766116677).

The spelling of 1165011066 in words is "one billion, one hundred sixty-five million, eleven thousand, sixty-six".