260305221 has 8 divisors (see below), whose sum is σ = 378625824. Its totient is φ = 157760720.

The previous prime is 260305217. The next prime is 260305259. The reversal of 260305221 is 122503062.

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 260305221 - 2² = 260305217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260305321) 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, 3943986 + ... + 3944051.

It is an arithmetic number, because the mean of its divisors is an integer number (47328228).

Almost surely, 2^260305221 is an apocalyptic number.

It is an amenable number.

260305221 is a deficient number, since it is larger than the sum of its proper divisors (118320603).

260305221 is a wasteful number, since it uses less digits than its factorization.

260305221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888051.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 260305221 is about 16133.9772219995. The cubic root of 260305221 is about 638.5000853401.

Adding to 260305221 its reverse (122503062), we get a palindrome (382808283).

The spelling of 260305221 in words is "two hundred sixty million, three hundred five thousand, two hundred twenty-one".