220833689 has 4 divisors (see below), whose sum is σ = 233823924. Its totient is φ = 207843456.

The previous prime is 220833671. The next prime is 220833709. The reversal of 220833689 is 986338022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 986338022 = 2 ⋅493169011.

It can be written as a sum of positive squares in 2 ways, for example, as 194742025 + 26091664 = 13955^2 + 5108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220833689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220833659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6495092 + ... + 6495125.

It is an arithmetic number, because the mean of its divisors is an integer number (58455981).

Almost surely, 2^220833689 is an apocalyptic number.

It is an amenable number.

220833689 is a deficient number, since it is larger than the sum of its proper divisors (12990235).

220833689 is a wasteful number, since it uses less digits than its factorization.

220833689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12990234.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 220833689 is about 14860.4740503121. The cubic root of 220833689 is about 604.4426613722.

The spelling of 220833689 in words is "two hundred twenty million, eight hundred thirty-three thousand, six hundred eighty-nine".