2206818 has 16 divisors (see below), whose sum is σ = 4904160. Its totient is φ = 735588.

The previous prime is 2206817. The next prime is 2206819. The reversal of 2206818 is 8186022.

It is an interprime number because it is at equal distance from previous prime (2206817) and next prime (2206819).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2206791 and 2206800.

It is not an unprimeable number, because it can be changed into a prime (2206811) 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, 20380 + ... + 20487.

It is an arithmetic number, because the mean of its divisors is an integer number (306510).

2^2206818 is an apocalyptic number.

2206818 is an abundant number, since it is smaller than the sum of its proper divisors (2697342).

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

2206818 is a wasteful number, since it uses less digits than its factorization.

2206818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40878 (or 40872 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 2206818 is about 1485.5362668074. The cubic root of 2206818 is about 130.1933611684.

The spelling of 2206818 in words is "two million, two hundred six thousand, eight hundred eighteen".