222156606 has 32 divisors (see below), whose sum is σ = 512455680. Its totient is φ = 62889696.

The previous prime is 222156589. The next prime is 222156631. The reversal of 222156606 is 606651222.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19686 + ... + 28841.

It is an arithmetic number, because the mean of its divisors is an integer number (16014240).

Almost surely, 2^222156606 is an apocalyptic number.

222156606 is an abundant number, since it is smaller than the sum of its proper divisors (290299074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222156606 is a wasteful number, since it uses less digits than its factorization.

222156606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48648.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 222156606 is about 14904.9188525131. The cubic root of 222156606 is about 605.6472421144.

The spelling of 222156606 in words is "two hundred twenty-two million, one hundred fifty-six thousand, six hundred six".