9765221 has 8 divisors (see below), whose sum is σ = 10336320. Its totient is φ = 9199872.

The previous prime is 9765211. The next prime is 9765227. The reversal of 9765221 is 1225679.

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 9765221 - 2¹⁰ = 9764197 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9765227) 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, 2336 + ... + 4998.

It is an arithmetic number, because the mean of its divisors is an integer number (1292040).

Almost surely, 2^9765221 is an apocalyptic number.

It is an amenable number.

9765221 is a deficient number, since it is larger than the sum of its proper divisors (571099).

9765221 is a wasteful number, since it uses less digits than its factorization.

9765221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875.

The product of its digits is 7560, while the sum is 32.

The square root of 9765221 is about 3124.9353593315. The cubic root of 9765221 is about 213.7440457514.

The spelling of 9765221 in words is "nine million, seven hundred sixty-five thousand, two hundred twenty-one".