244221685 has 4 divisors (see below), whose sum is σ = 293066028. Its totient is φ = 195377344.

The previous prime is 244221683. The next prime is 244221697. The reversal of 244221685 is 586122442.

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 63776196 + 180445489 = 7986^2 + 13433^2 .

It is a cyclic number.

It is not a de Polignac number, because 244221685 - 2¹ = 244221683 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 244221685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244221683) 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, 24422164 + ... + 24422173.

It is an arithmetic number, because the mean of its divisors is an integer number (73266507).

Almost surely, 2^244221685 is an apocalyptic number.

It is an amenable number.

244221685 is a deficient number, since it is larger than the sum of its proper divisors (48844343).

244221685 is an equidigital number, since it uses as much as digits as its factorization.

244221685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48844342.

The product of its digits is 30720, while the sum is 34.

The square root of 244221685 is about 15627.5937047263. The cubic root of 244221685 is about 625.0691635460.

The spelling of 244221685 in words is "two hundred forty-four million, two hundred twenty-one thousand, six hundred eighty-five".