8666091 has 36 divisors (see below), whose sum is σ = 14932632. Its totient is φ = 4826304.

The previous prime is 8666069. The next prime is 8666093. The reversal of 8666091 is 1906668.

It is not a de Polignac number, because 8666091 - 2⁵ = 8666059 is a prime.

It is a super-2 number, since 2×8666091² = 150202266440562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8666093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18735 + ... + 19191.

Almost surely, 2^8666091 is an apocalyptic number.

8666091 is a deficient number, since it is larger than the sum of its proper divisors (6266541).

8666091 is a wasteful number, since it uses less digits than its factorization.

8666091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 8666091 is about 2943.8225150304. The cubic root of 8666091 is about 205.4034568804.

The spelling of 8666091 in words is "eight million, six hundred sixty-six thousand, ninety-one".