222661642 has 16 divisors (see below), whose sum is σ = 381939840. Its totient is φ = 95367888.

The previous prime is 222661633. The next prime is 222661661. The reversal of 222661642 is 246166222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25123 + ... + 32809.

It is an arithmetic number, because the mean of its divisors is an integer number (23871240).

Almost surely, 2^222661642 is an apocalyptic number.

222661642 is a deficient number, since it is larger than the sum of its proper divisors (159278198).

222661642 is a wasteful number, since it uses less digits than its factorization.

222661642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9765.

The product of its digits is 13824, while the sum is 31.

The square root of 222661642 is about 14921.8511586197. The cubic root of 222661642 is about 606.1058407791.

The spelling of 222661642 in words is "two hundred twenty-two million, six hundred sixty-one thousand, six hundred forty-two".