266737073 has 2 divisors, whose sum is σ = 266737074. Its totient is φ = 266737072.

The previous prime is 266737069. The next prime is 266737111. The reversal of 266737073 is 370737662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264810529 + 1926544 = 16273^2 + 1388^2 .

It is a cyclic number.

It is not a de Polignac number, because 266737073 - 2² = 266737069 is a prime.

It is a super-2 number, since 2×266737073² = 142297332225214658, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 266737073.

It is not a weakly prime, because it can be changed into another prime (266737043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133368536 + 133368537.

It is an arithmetic number, because the mean of its divisors is an integer number (133368537).

Almost surely, 2^266737073 is an apocalyptic number.

It is an amenable number.

266737073 is a deficient number, since it is larger than the sum of its proper divisors (1).

266737073 is an equidigital number, since it uses as much as digits as its factorization.

266737073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 222264, while the sum is 41.

The square root of 266737073 is about 16332.0872211729. The cubic root of 266737073 is about 643.7162318920.

The spelling of 266737073 in words is "two hundred sixty-six million, seven hundred thirty-seven thousand, seventy-three".