220289693 has 4 divisors (see below), whose sum is σ = 237235068. Its totient is φ = 203344320.

The previous prime is 220289687. The next prime is 220289711. The reversal of 220289693 is 396982022.

220289693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16999129 + 203290564 = 4123^2 + 14258^2 .

It is a cyclic number.

It is not a de Polignac number, because 220289693 - 2¹⁶ = 220224157 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 220289693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220289603) 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, 8472668 + ... + 8472693.

It is an arithmetic number, because the mean of its divisors is an integer number (59308767).

Almost surely, 2^220289693 is an apocalyptic number.

It is an amenable number.

220289693 is a deficient number, since it is larger than the sum of its proper divisors (16945375).

220289693 is a wasteful number, since it uses less digits than its factorization.

220289693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16945374.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 220289693 is about 14842.1593105586. The cubic root of 220289693 is about 603.9459304624.

The spelling of 220289693 in words is "two hundred twenty million, two hundred eighty-nine thousand, six hundred ninety-three".