2081867 has 4 divisors (see below), whose sum is σ = 2149056. Its totient is φ = 2014680.

The previous prime is 2081861. The next prime is 2081873. The reversal of 2081867 is 7681802.

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

It is an interprime number because it is at equal distance from previous prime (2081861) and next prime (2081873).

It is a cyclic number.

It is not a de Polignac number, because 2081867 - 2⁴ = 2081851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2081861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33548 + ... + 33609.

It is an arithmetic number, because the mean of its divisors is an integer number (537264).

2^2081867 is an apocalyptic number.

2081867 is a deficient number, since it is larger than the sum of its proper divisors (67189).

2081867 is an equidigital number, since it uses as much as digits as its factorization.

2081867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67188.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 2081867 is about 1442.8676307964. The cubic root of 2081867 is about 127.6882672977.

The spelling of 2081867 in words is "two million, eighty-one thousand, eight hundred sixty-seven".