222664642 has 4 divisors (see below), whose sum is σ = 333996966. Its totient is φ = 111332320.

The previous prime is 222664627. The next prime is 222664669. The reversal of 222664642 is 246466222.

222664642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 183087961 + 39576681 = 13531^2 + 6291^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222664598 and 222664607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55666159 + ... + 55666162.

Almost surely, 2^222664642 is an apocalyptic number.

222664642 is a deficient number, since it is larger than the sum of its proper divisors (111332324).

222664642 is a wasteful number, since it uses less digits than its factorization.

222664642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111332323.

The product of its digits is 55296, while the sum is 34.

The square root of 222664642 is about 14921.9516820019. The cubic root of 222664642 is about 606.1085628605.

The spelling of 222664642 in words is "two hundred twenty-two million, six hundred sixty-four thousand, six hundred forty-two".