220766855 has 8 divisors (see below), whose sum is σ = 265952592. Its totient is φ = 175925248.

The previous prime is 220766851. The next prime is 220766873. The reversal of 220766855 is 558667022.

220766855 is nontrivially palindromic in base 4.

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

It is a cyclic number.

It is not a de Polignac number, because 220766855 - 2² = 220766851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220766851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84617 + ... + 87186.

It is an arithmetic number, because the mean of its divisors is an integer number (33244074).

Almost surely, 2^220766855 is an apocalyptic number.

220766855 is a deficient number, since it is larger than the sum of its proper divisors (45185737).

220766855 is a wasteful number, since it uses less digits than its factorization.

220766855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172065.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 220766855 is about 14858.2251631882. The cubic root of 220766855 is about 604.3816782299.

The spelling of 220766855 in words is "two hundred twenty million, seven hundred sixty-six thousand, eight hundred fifty-five".