2164365 has 24 divisors (see below), whose sum is σ = 4288128. Its totient is φ = 989280.

The previous prime is 2164313. The next prime is 2164367. The reversal of 2164365 is 5634612.

It is not a de Polignac number, because 2164365 - 2¹⁰ = 2163341 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 6 + 4⁴ + 3¹⁰ + 6⁵ + 5³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3121 + ... + 3750.

It is an arithmetic number, because the mean of its divisors is an integer number (178672).

2^2164365 is an apocalyptic number.

It is an amenable number.

2164365 is a deficient number, since it is larger than the sum of its proper divisors (2123763).

2164365 is a wasteful number, since it uses less digits than its factorization.

2164365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6889 (or 6886 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2164365 is about 1471.1780993476. The cubic root of 2164365 is about 129.3530978817.

Adding to 2164365 its reverse (5634612), we get a palindrome (7798977).

The spelling of 2164365 in words is "two million, one hundred sixty-four thousand, three hundred sixty-five".