2218807 has 2 divisors, whose sum is σ = 2218808. Its totient is φ = 2218806.

The previous prime is 2218771. The next prime is 2218831. The reversal of 2218807 is 7088122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2218807 - 2¹¹ = 2216759 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2218837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109403 + 1109404.

It is an arithmetic number, because the mean of its divisors is an integer number (1109404).

2^2218807 is an apocalyptic number.

2218807 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218807 is an equidigital number, since it uses as much as digits as its factorization.

2218807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 2218807 is about 1489.5660441887. The cubic root of 2218807 is about 130.4287030484.

It can be divided in two parts, 2218 and 807, that added together give a square (3025 = 55²).

The spelling of 2218807 in words is "two million, two hundred eighteen thousand, eight hundred seven".