222648319 has 4 divisors (see below), whose sum is σ = 223209544. Its totient is φ = 222087096.

The previous prime is 222648313. The next prime is 222648323. The reversal of 222648319 is 913846222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222648319 - 2⁷ = 222648191 is a prime.

It is a super-2 number, since 2×222648319² = 99144547907051522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222648313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280017 + ... + 280810.

It is an arithmetic number, because the mean of its divisors is an integer number (55802386).

Almost surely, 2^222648319 is an apocalyptic number.

222648319 is a deficient number, since it is larger than the sum of its proper divisors (561225).

222648319 is an equidigital number, since it uses as much as digits as its factorization.

222648319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561224.

The product of its digits is 41472, while the sum is 37.

The square root of 222648319 is about 14921.4047260973. The cubic root of 222648319 is about 606.0937517201.

The spelling of 222648319 in words is "two hundred twenty-two million, six hundred forty-eight thousand, three hundred nineteen".