705268261 has 2 divisors, whose sum is σ = 705268262. Its totient is φ = 705268260.

The previous prime is 705268243. The next prime is 705268283. The reversal of 705268261 is 162862507.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 568822500 + 136445761 = 23850^2 + 11681^2 .

It is an emirp because it is prime and its reverse (162862507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 705268261 - 2¹⁷ = 705137189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 705268261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (705268061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352634130 + 352634131.

It is an arithmetic number, because the mean of its divisors is an integer number (352634131).

Almost surely, 2^705268261 is an apocalyptic number.

It is an amenable number.

705268261 is a deficient number, since it is larger than the sum of its proper divisors (1).

705268261 is an equidigital number, since it uses as much as digits as its factorization.

705268261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 705268261 is about 26556.8872611231. The cubic root of 705268261 is about 890.1259178826.

It can be divided in two parts, 70526 and 8261, that added together give a palindrome (78787).

The spelling of 705268261 in words is "seven hundred five million, two hundred sixty-eight thousand, two hundred sixty-one".