6866117 has 4 divisors (see below), whose sum is σ = 6873036. Its totient is φ = 6859200.

The previous prime is 6866077. The next prime is 6866129. The reversal of 6866117 is 7116686.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7116686 = 2 ⋅3558343.

It can be written as a sum of positive squares in 2 ways, for example, as 1324801 + 5541316 = 1151^2 + 2354^2 .

It is a cyclic number.

It is not a de Polignac number, because 6866117 - 2⁸ = 6865861 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6866137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1658 + ... + 4059.

It is an arithmetic number, because the mean of its divisors is an integer number (1718259).

Almost surely, 2^6866117 is an apocalyptic number.

It is an amenable number.

6866117 is a deficient number, since it is larger than the sum of its proper divisors (6919).

6866117 is a wasteful number, since it uses less digits than its factorization.

6866117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6918.

The product of its digits is 12096, while the sum is 35.

The square root of 6866117 is about 2620.3276512681. The cubic root of 6866117 is about 190.0656928887.

The spelling of 6866117 in words is "six million, eight hundred sixty-six thousand, one hundred seventeen".