2165622 has 24 divisors (see below), whose sum is σ = 4448808. Its totient is φ = 702720.

The previous prime is 2165617. The next prime is 2165651. The reversal of 2165622 is 2265612.

It is a junction number, because it is equal to n+sod(n) for n = 2165592 and 2165601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22278 + ... + 22374.

It is an arithmetic number, because the mean of its divisors is an integer number (185367).

2^2165622 is an apocalyptic number.

2165622 is an abundant number, since it is smaller than the sum of its proper divisors (2283186).

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

2165622 is an equidigital number, since it uses as much as digits as its factorization.

2165622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 163 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 2165622 is about 1471.6052459814. The cubic root of 2165622 is about 129.3781345363.

The spelling of 2165622 in words is "two million, one hundred sixty-five thousand, six hundred twenty-two".