2206971709 has 2 divisors, whose sum is σ = 2206971710. Its totient is φ = 2206971708.

The previous prime is 2206971707. The next prime is 2206971721. The reversal of 2206971709 is 9071796022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1552123609 + 654848100 = 39397^2 + 25590^2 .

It is a cyclic number.

It is not a de Polignac number, because 2206971709 - 2¹ = 2206971707 is a prime.

Together with 2206971707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2206971707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1103485854 + 1103485855.

It is an arithmetic number, because the mean of its divisors is an integer number (1103485855).

Almost surely, 2^2206971709 is an apocalyptic number.

It is an amenable number.

2206971709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2206971709 is an equidigital number, since it uses as much as digits as its factorization.

2206971709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 2206971709 is about 46978.4174807964. The cubic root of 2206971709 is about 1301.9638383527.

The spelling of 2206971709 in words is "two billion, two hundred six million, nine hundred seventy-one thousand, seven hundred nine".