2085881 has 6 divisors (see below), whose sum is σ = 2426490. Its totient is φ = 1787856.

The previous prime is 2085869. The next prime is 2085899. The reversal of 2085881 is 1885802.

It can be written as a sum of positive squares in only one way, i.e., 1731856 + 354025 = 1316^2 + 595^2 .

It is not a de Polignac number, because 2085881 - 2¹⁴ = 2069497 is a prime.

It is a super-2 number, since 2×2085881² = 8701799092322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2085841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21236 + ... + 21333.

It is an arithmetic number, because the mean of its divisors is an integer number (404415).

2^2085881 is an apocalyptic number.

It is an amenable number.

2085881 is a deficient number, since it is larger than the sum of its proper divisors (340609).

2085881 is an equidigital number, since it uses as much as digits as its factorization.

2085881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42583 (or 42576 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 2085881 is about 1444.2579409510. The cubic root of 2085881 is about 127.7702788850.

The spelling of 2085881 in words is "two million, eighty-five thousand, eight hundred eighty-one".