965221 has 4 divisors (see below), whose sum is σ = 987712. Its totient is φ = 942732.

The previous prime is 965201. The next prime is 965227. The reversal of 965221 is 122569.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122569 = 19 ⋅6451.

It is not a de Polignac number, because 965221 - 2⁵ = 965189 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (965227) 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, 11181 + ... + 11266.

It is an arithmetic number, because the mean of its divisors is an integer number (246928).

2⁹⁶⁵²²¹ is an apocalyptic number.

It is an amenable number.

965221 is a deficient number, since it is larger than the sum of its proper divisors (22491).

965221 is a wasteful number, since it uses less digits than its factorization.

965221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22490.

The product of its digits is 1080, while the sum is 25.

The square root of 965221 is about 982.4566148182. The cubic root of 965221 is about 98.8269943777.

The spelling of 965221 in words is "nine hundred sixty-five thousand, two hundred twenty-one".