222666790 has 16 divisors (see below), whose sum is σ = 406291968. Its totient is φ = 87846336.

The previous prime is 222666781. The next prime is 222666791. The reversal of 222666790 is 97666222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222666791) by changing a digit.

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, 151782 + ... + 153241.

It is an arithmetic number, because the mean of its divisors is an integer number (25393248).

Almost surely, 2^222666790 is an apocalyptic number.

222666790 is a deficient number, since it is larger than the sum of its proper divisors (183625178).

222666790 is a wasteful number, since it uses less digits than its factorization.

222666790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305103.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 222666790 is about 14922.0236563276. The cubic root of 222666790 is about 606.1105118558.

The spelling of 222666790 in words is "two hundred twenty-two million, six hundred sixty-six thousand, seven hundred ninety".