222000646 has 32 divisors (see below), whose sum is σ = 405596160. Its totient is φ = 89064096.

The previous prime is 222000643. The next prime is 222000659. The reversal of 222000646 is 646000222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222000643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7800 + ... + 22468.

It is an arithmetic number, because the mean of its divisors is an integer number (12674880).

Almost surely, 2^222000646 is an apocalyptic number.

222000646 is a deficient number, since it is larger than the sum of its proper divisors (183595514).

222000646 is a wasteful number, since it uses less digits than its factorization.

222000646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14748.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 222000646 is about 14899.6861040762. The cubic root of 222000646 is about 605.5054819721.

Adding to 222000646 its reverse (646000222), we get a palindrome (868000868).

The spelling of 222000646 in words is "two hundred twenty-two million, six hundred forty-six", and thus it is an aban number.