1166566041 has 6 divisors (see below), whose sum is σ = 1685039850. Its totient is φ = 777710688.

The previous prime is 1166566031. The next prime is 1166566057. The reversal of 1166566041 is 1406656611.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 843321600 + 323244441 = 29040^2 + 17979^2 .

It is not a de Polignac number, because 1166566041 - 2²¹ = 1164468889 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1166565987 and 1166566005.

It is not an unprimeable number, because it can be changed into a prime (1166566021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64809216 + ... + 64809233.

It is an arithmetic number, because the mean of its divisors is an integer number (280839975).

Almost surely, 2^1166566041 is an apocalyptic number.

It is an amenable number.

1166566041 is a deficient number, since it is larger than the sum of its proper divisors (518473809).

1166566041 is a wasteful number, since it uses less digits than its factorization.

1166566041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129618455 (or 129618452 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1166566041 is about 34155.0295125037. The cubic root of 1166566041 is about 1052.6963326489.

The spelling of 1166566041 in words is "one billion, one hundred sixty-six million, five hundred sixty-six thousand, forty-one".