220766155 has 8 divisors (see below), whose sum is σ = 265037184. Its totient is φ = 176534400.

The previous prime is 220766123. The next prime is 220766177. The reversal of 220766155 is 551667022.

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

It is not a de Polignac number, because 220766155 - 2⁵ = 220766123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220766155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4435 + ... + 21475.

It is an arithmetic number, because the mean of its divisors is an integer number (33129648).

Almost surely, 2^220766155 is an apocalyptic number.

220766155 is a deficient number, since it is larger than the sum of its proper divisors (44271029).

220766155 is a wasteful number, since it uses less digits than its factorization.

220766155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19637.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 220766155 is about 14858.2016071932. The cubic root of 220766155 is about 604.3810394450.

The spelling of 220766155 in words is "two hundred twenty million, seven hundred sixty-six thousand, one hundred fifty-five".