2223665806 has 16 divisors (see below), whose sum is σ = 3499977600. Its totient is φ = 1057547128.

The previous prime is 2223665803. The next prime is 2223665819. The reversal of 2223665806 is 6085663222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223665803) 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 in 7 ways as a sum of consecutive naturals, for example, 126796 + ... + 143263.

It is an arithmetic number, because the mean of its divisors is an integer number (218748600).

Almost surely, 2^2223665806 is an apocalyptic number.

2223665806 is a deficient number, since it is larger than the sum of its proper divisors (1276311794).

2223665806 is a wasteful number, since it uses less digits than its factorization.

2223665806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270263.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 2223665806 is about 47155.7611114485. The cubic root of 2223665806 is about 1305.2383911952.

The spelling of 2223665806 in words is "two billion, two hundred twenty-three million, six hundred sixty-five thousand, eight hundred six".