220818061 has 8 divisors (see below), whose sum is σ = 225538560. Its totient is φ = 216130272.

The previous prime is 220818047. The next prime is 220818121. The reversal of 220818061 is 160818022.

220818061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220818061 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 (220818001) 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, 5716 + ... + 21778.

It is an arithmetic number, because the mean of its divisors is an integer number (28192320).

Almost surely, 2^220818061 is an apocalyptic number.

It is an amenable number.

220818061 is a deficient number, since it is larger than the sum of its proper divisors (4720499).

220818061 is a wasteful number, since it uses less digits than its factorization.

220818061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16355.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 220818061 is about 14859.9482165989. The cubic root of 220818061 is about 604.4284025986.

The spelling of 220818061 in words is "two hundred twenty million, eight hundred eighteen thousand, sixty-one".