220888861 has 8 divisors (see below), whose sum is σ = 229415040. Its totient is φ = 212522208.

The previous prime is 220888847. The next prime is 220888867. The reversal of 220888861 is 168888022.

It is a happy number.

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 220888861 - 2¹³ = 220880669 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 (220888867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37056 + ... + 42601.

It is an arithmetic number, because the mean of its divisors is an integer number (28676880).

Almost surely, 2^220888861 is an apocalyptic number.

It is an amenable number.

220888861 is a deficient number, since it is larger than the sum of its proper divisors (8526179).

220888861 is an equidigital number, since it uses as much as digits as its factorization.

220888861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79763.

The product of its (nonzero) digits is 98304, while the sum is 43.

The square root of 220888861 is about 14862.3302681645. The cubic root of 220888861 is about 604.4929941722.

The spelling of 220888861 in words is "two hundred twenty million, eight hundred eighty-eight thousand, eight hundred sixty-one".