222066878 has 16 divisors (see below), whose sum is σ = 371834496. Its totient is φ = 98591640.

The previous prime is 222066829. The next prime is 222066883. The reversal of 222066878 is 878660222.

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, 116426 + ... + 118317.

It is an arithmetic number, because the mean of its divisors is an integer number (23239656).

Almost surely, 2^222066878 is an apocalyptic number.

222066878 is a deficient number, since it is larger than the sum of its proper divisors (149767618).

222066878 is a wasteful number, since it uses less digits than its factorization.

222066878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234799.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 222066878 is about 14901.9085354863. The cubic root of 222066878 is about 605.5656917842.

The spelling of 222066878 in words is "two hundred twenty-two million, sixty-six thousand, eight hundred seventy-eight".