2040861 has 8 divisors (see below), whose sum is σ = 2758720. Its totient is φ = 1341792.

The previous prime is 2040851. The next prime is 2040917. The reversal of 2040861 is 1680402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2040861 - 2¹⁰ = 2039837 is a prime.

It is a super-2 number, since 2×2040861² = 8330227242642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040851) 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 7 ways as a sum of consecutive naturals, for example, 4441 + ... + 4878.

It is an arithmetic number, because the mean of its divisors is an integer number (344840).

2^2040861 is an apocalyptic number.

It is an amenable number.

2040861 is a deficient number, since it is larger than the sum of its proper divisors (717859).

2040861 is an equidigital number, since it uses as much as digits as its factorization.

2040861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9395.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 2040861 is about 1428.5870642001. The cubic root of 2040861 is about 126.8443543478.

The spelling of 2040861 in words is "two million, forty thousand, eight hundred sixty-one".