2086259661 has 12 divisors (see below), whose sum is σ = 3014287900. Its totient is φ = 1390469760.

The previous prime is 2086259629. The next prime is 2086259663. The reversal of 2086259661 is 1669526802.

It can be written as a sum of positive squares in 2 ways, for example, as 1237702761 + 848556900 = 35181^2 + 29130^2 .

It is not a de Polignac number, because 2086259661 - 2⁵ = 2086259629 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 (2086259663) 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 11 ways as a sum of consecutive naturals, for example, 7365 + ... + 65013.

Almost surely, 2^2086259661 is an apocalyptic number.

It is an amenable number.

2086259661 is a deficient number, since it is larger than the sum of its proper divisors (928028239).

2086259661 is a wasteful number, since it uses less digits than its factorization.

2086259661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61676 (or 61673 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 2086259661 is about 45675.5915232633. The cubic root of 2086259661 is about 1277.7801002181.

The spelling of 2086259661 in words is "two billion, eighty-six million, two hundred fifty-nine thousand, six hundred sixty-one".