220355866 has 8 divisors (see below), whose sum is σ = 332912160. Its totient is φ = 109385148.

The previous prime is 220355857. The next prime is 220355873. The reversal of 220355866 is 668553022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396046 + ... + 396601.

It is an arithmetic number, because the mean of its divisors is an integer number (41614020).

Almost surely, 2^220355866 is an apocalyptic number.

220355866 is a deficient number, since it is larger than the sum of its proper divisors (112556294).

220355866 is a wasteful number, since it uses less digits than its factorization.

220355866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792788.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 220355866 is about 14844.3883673259. The cubic root of 220355866 is about 604.0063976779.

The spelling of 220355866 in words is "two hundred twenty million, three hundred fifty-five thousand, eight hundred sixty-six".