2061208669 has 12 divisors (see below), whose sum is σ = 2308929300. Its totient is φ = 1837041024.

The previous prime is 2061208663. The next prime is 2061208697. The reversal of 2061208669 is 9668021602.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 807128100 + 1254080569 = 28410^2 + 35413^2 .

It is not a de Polignac number, because 2061208669 - 2¹⁷ = 2061077597 is a prime.

It is a super-2 number, since 2×2061208669² = 8497162354321503122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061208663) 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, 205384 + ... + 215185.

It is an arithmetic number, because the mean of its divisors is an integer number (192410775).

Almost surely, 2^2061208669 is an apocalyptic number.

2061208669 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2061208669 is a deficient number, since it is larger than the sum of its proper divisors (247720631).

2061208669 is a wasteful number, since it uses less digits than its factorization.

2061208669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420624 (or 420611 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 2061208669 is about 45400.5359990386. The cubic root of 2061208669 is about 1272.6451305117.

The spelling of 2061208669 in words is "two billion, sixty-one million, two hundred eight thousand, six hundred sixty-nine".