965820 has 24 divisors (see below), whose sum is σ = 2704464. Its totient is φ = 257536.

The previous prime is 965801. The next prime is 965843. The reversal of 965820 is 28569.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

965820 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7989 + ... + 8108.

It is an arithmetic number, because the mean of its divisors is an integer number (112686).

2⁹⁶⁵⁸²⁰ is an apocalyptic number.

It is an amenable number.

965820 is an abundant number, since it is smaller than the sum of its proper divisors (1738644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

965820 is a wasteful number, since it uses less digits than its factorization.

965820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16109 (or 16107 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 965820 is about 982.7614156040. The cubic root of 965820 is about 98.8474336098.

The spelling of 965820 in words is "nine hundred sixty-five thousand, eight hundred twenty".