2116806 has 16 divisors (see below), whose sum is σ = 4482864. Its totient is φ = 664064.

The previous prime is 2116801. The next prime is 2116811. The reversal of 2116806 is 6086112.

It is an interprime number because it is at equal distance from previous prime (2116801) and next prime (2116811).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116801) 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, 10275 + ... + 10478.

It is an arithmetic number, because the mean of its divisors is an integer number (280179).

2^2116806 is an apocalyptic number.

2116806 is an abundant number, since it is smaller than the sum of its proper divisors (2366058).

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

2116806 is a wasteful number, since it uses less digits than its factorization.

2116806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20775.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2116806 is about 1454.9247403216. The cubic root of 2116806 is about 128.3986189815.

The spelling of 2116806 in words is "two million, one hundred sixteen thousand, eight hundred six".