2065586861 has 8 divisors (see below), whose sum is σ = 2266450200. Its totient is φ = 1870719552.

The previous prime is 2065586839. The next prime is 2065586911. The reversal of 2065586861 is 1686855602.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 539121961 + 1526464900 = 23219^2 + 39070^2 .

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

It is not a de Polignac number, because 2065586861 - 2⁶ = 2065586797 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 (2065516861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498286 + ... + 1499663.

It is an arithmetic number, because the mean of its divisors is an integer number (283306275).

Almost surely, 2^2065586861 is an apocalyptic number.

It is an amenable number.

2065586861 is a deficient number, since it is larger than the sum of its proper divisors (200863339).

2065586861 is a wasteful number, since it uses less digits than its factorization.

2065586861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2998015.

The product of its (nonzero) digits is 691200, while the sum is 47.

The square root of 2065586861 is about 45448.7278259799. The cubic root of 2065586861 is about 1273.5455640617.

The spelling of 2065586861 in words is "two billion, sixty-five million, five hundred eighty-six thousand, eight hundred sixty-one".