2085917 has 4 divisors (see below), whose sum is σ = 2208636. Its totient is φ = 1963200.

The previous prime is 2085899. The next prime is 2085929. The reversal of 2085917 is 7195802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7195802 = 2 ⋅3597901.

It can be written as a sum of positive squares in 2 ways, for example, as 1865956 + 219961 = 1366^2 + 469^2 .

It is a cyclic number.

It is not a de Polignac number, because 2085917 - 2¹⁴ = 2069533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2085947) 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, 61334 + ... + 61367.

It is an arithmetic number, because the mean of its divisors is an integer number (552159).

2^2085917 is an apocalyptic number.

It is an amenable number.

2085917 is a deficient number, since it is larger than the sum of its proper divisors (122719).

2085917 is a wasteful number, since it uses less digits than its factorization.

2085917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122718.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 2085917 is about 1444.2704040449. The cubic root of 2085917 is about 127.7710139387.

The spelling of 2085917 in words is "two million, eighty-five thousand, nine hundred seventeen".