2065869 has 12 divisors (see below), whose sum is σ = 3213756. Its totient is φ = 1271232.

The previous prime is 2065841. The next prime is 2065879. The reversal of 2065869 is 9685602.

It can be written as a sum of positive squares in 2 ways, for example, as 275625 + 1790244 = 525^2 + 1338^2 .

It is not a de Polignac number, because 2065869 - 2¹⁷ = 1934797 is a prime.

It is a super-2 number, since 2×2065869² = 8535629450322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065829) 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 11 ways as a sum of consecutive naturals, for example, 8712 + ... + 8945.

It is an arithmetic number, because the mean of its divisors is an integer number (267813).

2^2065869 is an apocalyptic number.

It is an amenable number.

2065869 is a deficient number, since it is larger than the sum of its proper divisors (1147887).

2065869 is a wasteful number, since it uses less digits than its factorization.

2065869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17676 (or 17673 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2065869 is about 1437.3131182870. The cubic root of 2065869 is about 127.3603546052.

The spelling of 2065869 in words is "two million, sixty-five thousand, eight hundred sixty-nine".