220115866 has 8 divisors (see below), whose sum is σ = 330491700. Its totient is φ = 109951968.

The previous prime is 220115851. The next prime is 220115873. The reversal of 220115866 is 668511022.

It can be written as a sum of positive squares in 2 ways, for example, as 219780625 + 335241 = 14825^2 + 579^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50361 + ... + 54556.

Almost surely, 2^220115866 is an apocalyptic number.

220115866 is a deficient number, since it is larger than the sum of its proper divisors (110375834).

220115866 is a wasteful number, since it uses less digits than its factorization.

220115866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105968.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 220115866 is about 14836.3023021237. The cubic root of 220115866 is about 603.7870340366.

Adding to 220115866 its reverse (668511022), we get a palindrome (888626888).

The spelling of 220115866 in words is "two hundred twenty million, one hundred fifteen thousand, eight hundred sixty-six".