266594749 has 2 divisors, whose sum is σ = 266594750. Its totient is φ = 266594748.

The previous prime is 266594747. The next prime is 266594791. The reversal of 266594749 is 947495662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197205849 + 69388900 = 14043^2 + 8330^2 .

It is a cyclic number.

It is not a de Polignac number, because 266594749 - 2¹ = 266594747 is a prime.

Together with 266594747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 266594696 and 266594705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266594747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133297374 + 133297375.

It is an arithmetic number, because the mean of its divisors is an integer number (133297375).

Almost surely, 2^266594749 is an apocalyptic number.

It is an amenable number.

266594749 is a deficient number, since it is larger than the sum of its proper divisors (1).

266594749 is an equidigital number, since it uses as much as digits as its factorization.

266594749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 52.

The square root of 266594749 is about 16327.7294502328. The cubic root of 266594749 is about 643.6017214148.

The spelling of 266594749 in words is "two hundred sixty-six million, five hundred ninety-four thousand, seven hundred forty-nine".