266686741 has 2 divisors, whose sum is σ = 266686742. Its totient is φ = 266686740.

The previous prime is 266686729. The next prime is 266686801. The reversal of 266686741 is 147686662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239166225 + 27520516 = 15465^2 + 5246^2 .

It is a cyclic number.

It is not a de Polignac number, because 266686741 - 2¹⁷ = 266555669 is a prime.

It is a super-2 number, since 2×266686741² = 142243635650402162, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 266686691 and 266686700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266696741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133343370 + 133343371.

It is an arithmetic number, because the mean of its divisors is an integer number (133343371).

Almost surely, 2^266686741 is an apocalyptic number.

It is an amenable number.

266686741 is a deficient number, since it is larger than the sum of its proper divisors (1).

266686741 is an equidigital number, since it uses as much as digits as its factorization.

266686741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 46.

The square root of 266686741 is about 16330.5462554074. The cubic root of 266686741 is about 643.6757406283.

The spelling of 266686741 in words is "two hundred sixty-six million, six hundred eighty-six thousand, seven hundred forty-one".