2106996569 has 8 divisors (see below), whose sum is σ = 2130303240. Its totient is φ = 2083805056.

The previous prime is 2106996557. The next prime is 2106996589. The reversal of 2106996569 is 9656996012.

It can be written as a sum of positive squares in 4 ways, for example, as 432140944 + 1674855625 = 20788^2 + 40925^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106996569 is a prime.

It is a super-2 number, since 2×2106996569² = 8878869083555543522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2106996569.

It is not an unprimeable number, because it can be changed into a prime (2106996589) 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, 8267 + ... + 65439.

It is an arithmetic number, because the mean of its divisors is an integer number (266287905).

Almost surely, 2^2106996569 is an apocalyptic number.

It is an amenable number.

2106996569 is a deficient number, since it is larger than the sum of its proper divisors (23306671).

2106996569 is a wasteful number, since it uses less digits than its factorization.

2106996569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57579.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The square root of 2106996569 is about 45902.0322970563. The cubic root of 2106996569 is about 1281.9997568233. Note that the first 3 decimals are identical.

The spelling of 2106996569 in words is "two billion, one hundred six million, nine hundred ninety-six thousand, five hundred sixty-nine".