2166395 has 32 divisors (see below), whose sum is σ = 3442176. Its totient is φ = 1267200.

The previous prime is 2166319. The next prime is 2166403. The reversal of 2166395 is 5936612.

It is a happy number.

2166395 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2166395 - 2¹⁴ = 2150011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 6380 + ... + 6710.

It is an arithmetic number, because the mean of its divisors is an integer number (107568).

2^2166395 is an apocalyptic number.

2166395 is a deficient number, since it is larger than the sum of its proper divisors (1275781).

2166395 is a wasteful number, since it uses less digits than its factorization.

2166395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371.

The product of its digits is 9720, while the sum is 32.

The square root of 2166395 is about 1471.8678609169. The cubic root of 2166395 is about 129.3935261730.

The spelling of 2166395 in words is "two million, one hundred sixty-six thousand, three hundred ninety-five".