8666791 has 8 divisors (see below), whose sum is σ = 10335744. Its totient is φ = 7105560.

The previous prime is 8666783. The next prime is 8666797. The reversal of 8666791 is 1976668.

8666791 = T₈₉₈ + T₈₉₉ + ... + T₉₁₈.

8666791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8666791 - 2³ = 8666783 is a prime.

It is a super-2 number, since 2×8666791² = 150226532475362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8666797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26755 + ... + 27076.

It is an arithmetic number, because the mean of its divisors is an integer number (1291968).

Almost surely, 2^8666791 is an apocalyptic number.

8666791 is a deficient number, since it is larger than the sum of its proper divisors (1668953).

8666791 is a wasteful number, since it uses less digits than its factorization.

8666791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53861.

The product of its digits is 108864, while the sum is 43.

The square root of 8666791 is about 2943.9414056669. The cubic root of 8666791 is about 205.4089871919.

The spelling of 8666791 in words is "eight million, six hundred sixty-six thousand, seven hundred ninety-one".