705812281 has 2 divisors, whose sum is σ = 705812282. Its totient is φ = 705812280.

The previous prime is 705812267. The next prime is 705812299. The reversal of 705812281 is 182218507.

705812281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 356869881 + 348942400 = 18891^2 + 18680^2 .

It is a cyclic number.

It is not a de Polignac number, because 705812281 - 2²⁵ = 672257849 is a prime.

It is a super-2 number, since 2×705812281² = 996341952020845922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (705815281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352906140 + 352906141.

It is an arithmetic number, because the mean of its divisors is an integer number (352906141).

Almost surely, 2^705812281 is an apocalyptic number.

It is an amenable number.

705812281 is a deficient number, since it is larger than the sum of its proper divisors (1).

705812281 is an equidigital number, since it uses as much as digits as its factorization.

705812281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 705812281 is about 26567.1278274487. The cubic root of 705812281 is about 890.3547300342.

The spelling of 705812281 in words is "seven hundred five million, eight hundred twelve thousand, two hundred eighty-one".