2162065 has 4 divisors (see below), whose sum is σ = 2594484. Its totient is φ = 1729648.

The previous prime is 2162063. The next prime is 2162071. The reversal of 2162065 is 5602612.

2162065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 976144 + 1185921 = 988^2 + 1089^2 .

It is a cyclic number.

It is not a de Polignac number, because 2162065 - 2¹ = 2162063 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

2162065 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2162063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216202 + ... + 216211.

It is an arithmetic number, because the mean of its divisors is an integer number (648621).

2^2162065 is an apocalyptic number.

It is an amenable number.

2162065 is a deficient number, since it is larger than the sum of its proper divisors (432419).

2162065 is an equidigital number, since it uses as much as digits as its factorization.

2162065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432418.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2162065 is about 1470.3962051094. The cubic root of 2162065 is about 129.3072618708.

Adding to 2162065 its reverse (5602612), we get a palindrome (7764677).

It can be divided in two parts, 216 and 2065, that multiplied together give a triangular number (446040 = T₉₄₄).

The spelling of 2162065 in words is "two million, one hundred sixty-two thousand, sixty-five".