222161606 has 16 divisors (see below), whose sum is σ = 335881728. Its totient is φ = 110205000.

The previous prime is 222161591. The next prime is 222161617. The reversal of 222161606 is 606161222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155411 + ... + 156833.

It is an arithmetic number, because the mean of its divisors is an integer number (20992608).

Almost surely, 2^222161606 is an apocalyptic number.

222161606 is a deficient number, since it is larger than the sum of its proper divisors (113720122).

222161606 is a wasteful number, since it uses less digits than its factorization.

222161606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 222161606 is about 14905.0865814325. The cubic root of 222161606 is about 605.6517857763.

The spelling of 222161606 in words is "two hundred twenty-two million, one hundred sixty-one thousand, six hundred six".