2184861 has 24 divisors (see below), whose sum is σ = 3447360. Its totient is φ = 1227072.

The previous prime is 2184859. The next prime is 2184863. The reversal of 2184861 is 1684812.

2184861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2184859) and next prime (2184863).

It is not a de Polignac number, because 2184861 - 2¹ = 2184859 is a prime.

2184861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2184863) 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 23 ways as a sum of consecutive naturals, for example, 13000 + ... + 13166.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

2^2184861 is an apocalyptic number.

2184861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2184861 is a deficient number, since it is larger than the sum of its proper divisors (1262499).

2184861 is a wasteful number, since it uses less digits than its factorization.

2184861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 266 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 2184861 is about 1478.1275317103. The cubic root of 2184861 is about 129.7601296660.

The spelling of 2184861 in words is "two million, one hundred eighty-four thousand, eight hundred sixty-one".