2706891281 has 2 divisors, whose sum is σ = 2706891282. Its totient is φ = 2706891280.

The previous prime is 2706891223. The next prime is 2706891289. The reversal of 2706891281 is 1821986072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2310244225 + 396647056 = 48065^2 + 19916^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2706891281 is a prime.

It is a super-2 number, since 2×2706891281² = 14654520814307641922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2706891289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1353445640 + 1353445641.

It is an arithmetic number, because the mean of its divisors is an integer number (1353445641).

Almost surely, 2^2706891281 is an apocalyptic number.

It is an amenable number.

2706891281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2706891281 is an equidigital number, since it uses as much as digits as its factorization.

2706891281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 2706891281 is about 52027.7933512464. The cubic root of 2706891281 is about 1393.6603285334.

The spelling of 2706891281 in words is "two billion, seven hundred six million, eight hundred ninety-one thousand, two hundred eighty-one".