2168855 has 16 divisors (see below), whose sum is σ = 2853984. Its totient is φ = 1572480.

The previous prime is 2168851. The next prime is 2168861. The reversal of 2168855 is 5588612.

It is a happy number.

It is not a de Polignac number, because 2168855 - 2² = 2168851 is a prime.

It is a super-2 number, since 2×2168855² = 9407864022050, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁴ + 1 + 6⁸ + 8 + 8⁴ + 5⁷ + 5⁸ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3692 + ... + 4238.

It is an arithmetic number, because the mean of its divisors is an integer number (178374).

2^2168855 is an apocalyptic number.

2168855 is a deficient number, since it is larger than the sum of its proper divisors (685129).

2168855 is a wasteful number, since it uses less digits than its factorization.

2168855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626.

The product of its digits is 19200, while the sum is 35.

The square root of 2168855 is about 1472.7032966623. The cubic root of 2168855 is about 129.4424842605.

The spelling of 2168855 in words is "two million, one hundred sixty-eight thousand, eight hundred fifty-five".