266611349 has 2 divisors, whose sum is σ = 266611350. Its totient is φ = 266611348.

The previous prime is 266611343. The next prime is 266611393. The reversal of 266611349 is 943116662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258630724 + 7980625 = 16082^2 + 2825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266611349 is a prime.

It is a super-2 number, since 2×266611349² = 142163222831199602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266611343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133305674 + 133305675.

It is an arithmetic number, because the mean of its divisors is an integer number (133305675).

Almost surely, 2^266611349 is an apocalyptic number.

It is an amenable number.

266611349 is a deficient number, since it is larger than the sum of its proper divisors (1).

266611349 is an equidigital number, since it uses as much as digits as its factorization.

266611349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 38.

The square root of 266611349 is about 16328.2377799933. The cubic root of 266611349 is about 643.6150794759.

The spelling of 266611349 in words is "two hundred sixty-six million, six hundred eleven thousand, three hundred forty-nine".