2206866 has 16 divisors (see below), whose sum is σ = 4521888. Its totient is φ = 717600.

The previous prime is 2206861. The next prime is 2206877. The reversal of 2206866 is 6686022.

It is not an unprimeable number, because it can be changed into a prime (2206861) 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, 4240 + ... + 4731.

It is an arithmetic number, because the mean of its divisors is an integer number (282618).

2^2206866 is an apocalyptic number.

2206866 is an abundant number, since it is smaller than the sum of its proper divisors (2315022).

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

2206866 is a wasteful number, since it uses less digits than its factorization.

2206866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9017.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2206866 is about 1485.5524225015. The cubic root of 2206866 is about 130.1943050971.

The spelling of 2206866 in words is "two million, two hundred six thousand, eight hundred sixty-six".