2027861 has 4 divisors (see below), whose sum is σ = 2212224. Its totient is φ = 1843500.

The previous prime is 2027843. The next prime is 2027869. The reversal of 2027861 is 1687202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2027861 - 2⁶ = 2027797 is a prime.

It is a super-2 number, since 2×2027861² = 8224440470642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2027861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2027869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92165 + ... + 92186.

It is an arithmetic number, because the mean of its divisors is an integer number (553056).

2^2027861 is an apocalyptic number.

It is an amenable number.

2027861 is a deficient number, since it is larger than the sum of its proper divisors (184363).

2027861 is a wasteful number, since it uses less digits than its factorization.

2027861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184362.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 2027861 is about 1424.0298451929. The cubic root of 2027861 is about 126.5744535070.

The spelling of 2027861 in words is "two million, twenty-seven thousand, eight hundred sixty-one".