606221 has 8 divisors (see below), whose sum is σ = 755904. Its totient is φ = 472320.

The previous prime is 606181. The next prime is 606223. The reversal of 606221 is 122606.

606221 = T₈₅ + T₈₆ + ... + T₁₆₁.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-606221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 606221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (606223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3860 + ... + 4013.

It is an arithmetic number, because the mean of its divisors is an integer number (94488).

2⁶⁰⁶²²¹ is an apocalyptic number.

It is an amenable number.

606221 is a deficient number, since it is larger than the sum of its proper divisors (149683).

606221 is a wasteful number, since it uses less digits than its factorization.

606221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7891.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 606221 is about 778.6019522195. The cubic root of 606221 is about 84.6337645387.

Adding to 606221 its reverse (122606), we get a palindrome (728827).

The spelling of 606221 in words is "six hundred six thousand, two hundred twenty-one".